Solve.April shoots an arrow upward into the air at a speed of 64 feet per second from a platform that is 18 feet high. The height of the arrow is given by the function h(t) = -16t2 + 64t + 18, where t is the time is seconds. What is the maximum height of the arrow?
A. 82 ft
B. 18 ft
C. 64 ft
D. 14 ft
Answer: A
Mathematics
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For the pair of functions, find the indicated sum, difference, product, or quotient.f(x) = x + 7, g(x) = 
Find (f - g)(-7).
A. does not exist
B. 0
C. 
D. 
Mathematics
Solve the problem.Helen Weller invested $13,000 in an account that pays 12% simple interest. How much additional money must be invested in an account that pays 15% simple interest so that the average return on the two investments amounts to 13%?
A. $9000 B. $13,000 C. $6500 D. $10,000
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Multiply.(-0.4)(-0.9)
A. -1.3 B. 0.36 C. -0.5 D. -1.2
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Evaluate.- 
÷ (
)
A. - 
B. - 
C. - 
D. - 
Mathematics