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156
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There are 9 books stacked on a shelf. The thickness of each book is either 1 inch or 2
inches. The height of the stack of 9 books is 14 inches. Which system of equations can
be used to determine x, the number of 1-inch thick book in the stack, andy, the number of
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2-inch thick books?
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x +y = 14
2x +y = 9
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157
The population of a town is currently 9,000. The functionp = 9,000 + 8t2 can be used to
estimatep, the population of the town t years from now. Based on this function, which.iÿ ÿJÿ
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The population of the town is increasing at a constant rate.
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The population of the town will reach 10,000 between 11 and 12 years from now.
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The population of the town will increase by 256 people two years from now.ÿ 000 "1 ÿ 6ÿZÿ
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The population of the town will increase and then decrease•
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158
What is the equation in standard form of the line that passes through the point (1, 24) and
has a slope of-0.6?
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159
The late fee for overdue books at a library is $0.25 per day per book, with a maximum
late fee of $5.00 per book. Which graph models the total late fee for 3 books that were
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checked out on the same day and are overdue?
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Fees for Overdue Books
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160
For the function w,ÿ(9):-7, andS(-7): 9.1 Ify:w(x), what is the value ofy
when x = -7?
Record your answer and fill in the bubbles on your answer document.
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161 The graph of the quadratic function h passes through the points (-4, 32), (3, 4), (5, 14),
and (7, 32). Which of the following shows the same relationship as h?
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162
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An airplane's altitude in feet during its descent for landing can be found using the
.
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functionf(x) = -300x + 30,000, where x represents the horizontal distance in miles from
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where the plane begins its descent. After new government regulations become law, the
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airplane's descent will be modeled by the function g(x) = -300x + 30,500. Which
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statement describes this change?
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The airplane starts its descent from an altitude 500 feet higher.
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The airplane starts its descent from an altitude 500 feet lower.
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The airplane descends 500 feet per horizontal mile faster.
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The airplane descends 500 feet per horizontal mile slower.
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163
The graph ofy = 3x2 - 2 is shown below.
If the coefficient OfX2 is changed from 3 to another positive number to create a new
function, how will the graph of the new function compare with the graph of the original
function?
A
The x-intercepts of the new graph will be the same as the x-intercepts of the original
graph.
B
The vertex of the new graph will be different from the vertex of the original graph.
The new graph will be wider or narrower than the original graph.
D
The new graph will open in the opposite direction as the original graph.
164
The sophomore class needs a combined total of 216 medium and large T-shirts for field
day. The number of medium T-shirts needed is three times the number of large T-shirts
needed. Based on this information, would it be reasonable for the sophomore class to
order 72 large T-shirts and 144 medium T-shirts?
No, because the number of medium T-shirts is not 3 times the number of large T-shirts.
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No, because the number of large T-shirts is not 3 times the number of medium T-shirts.
H
Yes, because the total number of T-shirts is 216.
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Yes, because the number of large T-shirts is - of the total number of T-shirts.
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Which inequality is equivalent to 7x - 2y > 8?
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166
If the graph ofy = 9x + 4 is translated 4 units up, which equation describes the new
graph?
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y=9x+8
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y= 13x+4
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y= 13x+8
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y=4x+4
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167
The functiony = xÿ + x - 6 is graphed below.
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What are the values ofx when X2 + X -- 6 = -4?
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168
Which expression is equivalent to -6xÿ - 1 lx - 4?
(3x + 7)(3x- 3)
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