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7/5/15, 9:13 PM
Midterm Examination (7462462)
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Question
1.
Question Details
StitzCA3 1.4.062. [3114682]
-
Find the (implied) domain of the function. (Enter your answer using interval notation.)
u(w) =
2.
w−2
5−
w
Question Details
StitzCA3 2.1.029. [1848968]
-
Carl can stuff 6 envelopes per minute. Find a linear function E that represents the total number of envelopes Carl
can stuff after t hours, assuming he doesn't take any breaks.
E(t) =
3.
,t≥0
Question Details
StitzCA3 2.2.025.part5. [3116225]
-
Consider the following function.
f(x) = −4|x|
From the graph, list the intervals on which the function is increasing, decreasing, or constant. (Enter your answers
using interval notation. If the answer cannot be expressed as an interval, enter EMPTY or ∅.)
increasing
decreasing
constant
4.
Question Details
StitzCA3 1.6.023. [1847380]
-
Analytically determine if the following function is even, odd or neither.
f(x) = 6
even
odd
both even and odd
neither
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5.
7/5/15, 9:13 PM
Question Details
StitzCA3 2.5.005. [1849003]
-
On New Year's Day, I (Jeff) started weighing myself every morning in order to have an interesting data set for this
section of the book. (The professionals in the field of weight management strongly discourage weighing yourself
every day. When you focus on the number and not overall health, you tend to lose sight of your objectives. I was
making a noble sacrifice for science, but you should not try this at home.) The whole chart would be too big to put
into the book neatly, so I've decided to give only a small portion of the data to you. This then becomes a Civics
lesson in honesty, as you shall soon see. There are two charts given below. One has my weight for the first eight
Thursdays of the year (January 1, 2009 was a Thursday and we'll count it as Day 1.) and the other has my weight
for the first 10 Saturdays of the year.
Day # x
(Thursday)
1
8
15
22
29
36
43
50
My weight y
in pounds
238.2 237.0 235.6 234.4 233.0 233.8 232.8 232.0
Day # x
(Saturday)
3
10
17
24
31
38
45
52
59
66
My weight y
in pounds
238.4 235.8 235.0 234.2 236.2 236.2 235.2 233.2 236.8 238.2
(a) Find the least squares line for the Thursday data. (Round the slope and the y-intercept to two decimal
places.)
y(x) =
Is it a good fit?
Yes
No
(b) Find the least squares line for the Saturday data. (Round the slope to six decimal places and the yintercept to two decimal places.)
y(x) =
Is it a good fit?
Yes
No
(c) Use Quadratic Regression to find a parabola which models the Saturday data. (Round your answer for
the x2 coefficient to three decimal places and your answers for the x coefficient and constant term to two
decimal places.)
y(x) =
Is it a good fit?
Yes
No
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Assignment Previewer
6.
7/5/15, 9:13 PM
Question Details
StitzCA3 1.7.041. [1849356]
-
The complete graph of y = f(x) is given below. Use it to graph the following function.
a(x) = f(x + 1)
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7.
7/5/15, 9:13 PM
Question Details
StitzCA3 1.1.026.cap. [1848694]
-
Consider the following pair of points.
23 , 2 ,
5 5
− 22 , − 13
5
5
Part 1 - Distance
Find the distance d between the two points.
d =
Part 2 - Midpoint
Find the midpoint M of the line segment connecting the two points.
M(x, y) =
Assignment Details
Name (AID): Midterm Examination (7462462)
Submissions Allowed: 1
Category: Test
Code:
Locked: No
Author: Szekerczes, Julie ( [email protected] )
Last Saved: Jul 5, 2015 09:09 PM EDT
Permission: Protected
Randomization: Person
Which graded: Last
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