Graph the function.f(x) = 
x + 2
A. 
B. 
C. 
D. 
Answer: B
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Use an equation to solve the problem.Sales tax on a $14 compact disc is $0.84. At what rate is sales tax computed?
A. 2% B. 6% C. 8% D. 5% E. 3%
Find all the second order partial derivatives of the given function.f(x, y) = x ln (y - x)
A. 
= 
; 
= - 
; 
= 
= 
B. 
= 
; 
= - 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= 
; 
= 
= 
Solve the problem.When making a long distance call from his landline, Martin pays $1.95 for the first three minutes. After that, each additional minute or portion of a minute costs $0.35. How many minutes can Martin call long distance if the cost is to be no more than $7.90?
A. up to 20 minutes B. up to 17 minutes C. up to 23 minutes D. at least 4 minutes
For the polynomial, list each real zero and its multiplicity. Determine whether the graph crosses or touches the x-axis at each x -intercept.f(x) = 
2(x - 1)3
A. 
, multiplicity 2, touches x-axis; -1, multiplicity 3, crosses x-axis
B. - 
, multiplicity 2, touches x-axis; 1, multiplicity 3, crosses x-axis
C. 
, multiplicity 2, crosses x-axis; -1, multiplicity 3, touches x-axis
D. - 
, multiplicity 2, crosses x-axis; 1, multiplicity 3, touches x-axis