Decide whether or not the given equation is an identity.2 sin 
= (1 - cos ?)csc 
A. Yes
B. No
Answer: A
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Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = tan
A. y = tan u; u = ? - 
; 
= sec2
B. y = tan u; u = ? - 
; 
= 
sec2
C. y = tan u; u = ? - 
; 
= 
sec
tan
D. y = tan u; u = ? - 
; 
= sec2
Use the definition to find an expression for the instantaneous velocity of an object moving with rectilinear motion according to the given function relating s (in ft) and t (in s).s = 
A. - 
B. 
C. - 
D. - 
Solve the problem.A truck rental company rents a moving truck one day by charging $29 plus $0.09 per mile. Write a linear equation that relates the cost C, in dollars, of renting the truck to the number x of miles driven. What is the cost of renting the truck if the truck is driven 190 miles?
A. C(x) = 0.09x + 29; $30.71 B. C(x) = 0.09x + 29; $46.10 C. C(x) = 29x + 0.09; $5,510.09 D. C(x) = 0.09x - 29; -$11.90
Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = 3x - 2
A. Yes, no B. No, yes C. Yes, yes D. No, no