ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
ignore my answers and do all questions
3. Rebecca lost many of her chickens to foxes last summer, so she is planning a large fenced-in
rectangular pen connected to a 20-foot long hen house as illustrated in the diagram. (No fencing
is needed along the hen house.) Rebecca purchased 100 feet of fox-proof fencing. Find a function
A that gives the area of the pen when the segment of the pen next to the hen house is x feet long.
Hen House
20 feet – IK…… X —-
K
Chicken pen
A. Label the diagram by filling in the blanks with algebraic expressions that involve x.
HINT: Start with the blank at the bottom. Then figure out the appropriate expression for the
blank on the right side.
B.
Find a function A that gives the area of the pen when the segment of the pen next to the hen
house is x feet long.
A(x) =
5
W
84
2x+547
Mohammad
Name:
M121 Section 1, Su2018
work as a pdf file to me by email by 3pm on Friday 5/18.
Quiz #3 – Take Home. Due in my office by 3pm on Friday 5/18. OR, you may send a SCANNED copy of your
Show ALL WORK to receive full credit! Little or no work will result in little or no points.
You MAY use your notes & textbook on this quiz AND you MAY work together with other M121
students on the quiz. However, you MAY not consult with any other knowledgeable person (such as a
tutor) about the quiz.
1. Determine the following for the function f(x) graphed
Write answers in interval notation when applicable.
a.) Interval/s of decreasing:
1
11,3
b.) Local / relative maxima value(s) = _ -4,1 3,6
1
3,6
0
at x =
1
1
c.) Domain:
-4, 6
–
UN
—
Range:
– 3, 4
D
1.
d.) f(-2) =_0 $(x) = 3 for x = – 1
e.) f(x) > 0 for x in
2. The marketing department of a local shoe company found that approximately 650 pairs of hiking
boots are sold monthly when the price of each pair is $97. In addition, for each $1 reduction in
price, 20 more pairs of hiking boots are sold monthly.
a) Complete the following table:
Price of a Pair of Boots
$97
# of pairs sold each month
650
Monthly Revenue
63050
64 320
$96
670
690
$95
65 550
75650
$85
890
b) Let x = the price. Then:
Price per pair of hiking boots =
(algebraic expression)
(algebraic expression)
Number of pairs of hiking boots sold monthly =
(algebraic expression)
Monthly revenue function is given by R(x)
OVER->
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