Solve the problem.A recipe calls for 1 
cups of sugar for 20 brownies. How much of sugar is needed to make 8 brownies?
A. 
c
B. 9
c
C. 
c
D. 3 c
Answer: C
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Factor completely.x4 - 100x2
A. (x2 - 10x)(x2 + 10x) B. x2(x + 10)2 C. x2(x - 10)2 D. x2(x - 10)(x + 10)
Solve the problem.The function f(t) = -0.14t2 + 0.51t + 30.3 models a certain country's population in millions, ages 65 and older, where t represents years after 2010. The function g(t) = 0.51t2 + 12.89t + 106 models the total yearly cost of the government's health insurance program in billions of dollars, where t represents years after 2010. What does the function 
represent? Find 
(5).
A. Cost per person in thousands of dollars. $0.20 thousand B. Cost per person in thousands of dollars. $12.76 thousand C. Cost per person in thousands of dollars. $6.24 thousand D. Cost per person in thousands of dollars. $0.16 thousand
Find zw or 
as specified. Leave your answer in polar form.z = 10(cos 45° + i sin 45°)w = 5(cos 15° + i sin 15°)Find 
.
A. 
(cos 45° + i sin 45°)
B. 2(cos 30° + i sin 30°)
C. 
(cos 30° + i sin 30°)
D. 2(cos 45° + i sin 45°)
Graph.x2 - y2 = 18
A. 
B. 
C. 
D. 