Find the variation equation for the variation statement.t varies directly as r and inversely as s; t = 3 when r = 27 and s = 72
A. t = 
B. t = 8rs
C. t = 
D. t = 
Answer: D
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Solve the problem.A construction company buys a truck for $48,000. The truck is expected to last 16 years, at which time it will be worth $3200. Write a function v(x) that describes the value of the truck at any time during its lifetime. Be sure to state the domain of the function.
A. v(x) = 48 ,000 - 2500t, with domain 0 ? t ? 16 B. v(x) = 48 ,000 - 2300t, with domain 0 ? t ? 16 C. v(x) = 48 ,000 + 2800t, with domain 0 ? t ? 16 D. v(x) = 48 ,000 - 2800t, with domain 0 ? t ? 16
Evaluate.
A. -1
B. 
C. 1
D. 0
Solve.You have taken up gardening for relaxation and have decided to fence in your new rectangular shaped masterpiece. The length of the garden is 12 meters and 46 meters of fencing is required to completely enclose it. What is the width of the garden?
A. 552 m B. 22 m C. 3.83 m D. 11 m
Multiply and simplify.
A. 
B. 
C. 
D. 