Name_________________________
Weekly #8
Due: Friday May 26, 2017
Algebra 1 CC
Part I: Multiple Choice
Answer all 10 questions in this part. Each correct answer will receive 2 credits. To receive full credit you will need
to demonstrate how you arrived at your solution.(formula’s, explanations, graphs, algebraically, etc) For each
question, choose the expression (response) that best completes the statement or answers the question.
1.
When solving an equation with two variables, x and y, is
1) the set of all x values that make
2) the set of all y values that make
3) the set of all ordered pairs,
, that make the
equation true
4) the set of all ordered pairs,
, where the
graph of the equation crosses the y-axis
2.
Which expression is equivalent to
1)
2)
3)
4)
3.
The sequence
1)
2)
3)
4)
4.
After using the distributive property with
1)
2)
3)
4)
5
Harry has his money invested in a stock portfolio. The value,
, of his portfolio can be modeled with the
function
, where x is the number of years since he made his investment. Which statement
describes the rate of change of the value of his portfolio?
1) It decreases 78% per year.
2) It decreases 22% per year.
3) It increases 78% per year.
4) It increases 22% per year.
6.
If
1)
2)
3)
4)
?
, where
and
, which of the following must be true?
and
, then B - A equals
, the result is?
7.
A municipal town garage charges a base rate of $3.50 for up to 2 hours, and an hourly rate for each additional
hour. The sign below gives the prices for up to 5 hours of parking.
Which linear equation can be used to find x, the additional hourly parking rate?
1)
2)
3)
4)
8.
When the function
is multiplied by the value a, where
1) opens upward and is wider
2) opens upward and is narrower
3) opens downward and is wider
4) opens downward and is narrower
9.
If
1)
2)
3) If
4) If
10.
, the graph of the new function,
, which statement is always true?
, then
, then
A positive correlation always exists on a scatter plot when
1) y remains unchanged as x increases
2) y changes randomly as x increases
3) y decreases as x increases
4) y increases as x increases
PART II: Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc.
For all questions in this part, a correct numerical answer with no work shown will receive no credit.
11.
Find the horizontal axis intercepts of
12.
Solve the equation below for x in terms of a.
, algebraically.
13.
Jakob is working on his math homework. He decides that the sum of the expression
must be rational
because it is a fraction. Is Jakob correct? Explain your reasoning
14.
Sarah incorrectly graphed the inequality
as shown below.
Explain Sarah's mistake. Graph the inequality correctly on the set of axes below.
15.
Robin collected data on the number of hours she watched television on Sunday through Thursday nights for a
period of 3 weeks. The data are shown in the table below.
Using an appropriate scale on the number line below, construct a box plot for the 15 values.