Solve the system of equations by the substitution method.
A. (-3, -15)
B. no solution
C. (-15, -3)
D. infinite number of solutions
Answer: C
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Find the equation that the given graph represents.
A. f(x) = -x3 + 4x2 + x - 5 B. f(x) = x2 + 4x - 5 C. f(x) = x3 + x2 + x + 5 D. f(x) = x3 + 4x2 - x - 5
The cost of producing x units of a certain item is 
Find the average value of the cost function C(x) over the interval from 0 to 1,000. Round answer to nearest penny.
?
A. $933,866.67 B. $2,801,600.00 C. $549,333.33 D. $3,735,466.67 E. $2,147,893.33
Determine whether a radical function would be a good model of the given data.
A. Yes B. No
Find the slope and y-intercept (if possible) of the equation of the line. Select the correct answer for the line.
?
?
A. 
?m= 0
y-intercept: (0,4)
B.
?m = 0
y-intercept: (0,-4)
C.
?mis undefined.
There is no y-intercept.
D.
?m =0
y-intercept: (0,-4)
E.
??m =0
There is no y-intercept.