Math 112 Final Exam Study Aid Worksheet With Answer Key Page 20
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39Math 112
Final Exam Study Aid
20 of 39
65. Determine a function in standard form for the quadratic function whose graph is shown
below.
6
y
(0, 5)
4
2
(4, 1)
x
2
4
6
8
1
1
2
2
(A) f (x) =
(x
1)
+ 4
(B) f (x) =
(x + 4)
+ 1
4
4
1
2
2
(C) f (x) = 4(x
4)
+ 1
(D) f (x) =
(x
4)
+ 1
4
2
(E) f (x) =
(x
4)
+ 1
66. An espresso stand finds that its weekly profit (in dollars), P (x), is a quadratic function
of the price, x, it charges per cup (in dollars). A graph of P (x) is shown below:
P (x)
x
0.5
2
2,900
The graph of P (x)
What price should the espresso stand charge to maximize its weekly profits?
(A) $0.50 per cup
(B) $1.25 per cup
(C) $1.65 per cup
(D) $2.00 per cup
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