Use the graph of y = 
to solve the equation 
where 
and y2 represent linear functions.
A. {16}
B. {-15}
C. {0}
D. {15}
Answer: D
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Solve.Suppose that the sales of a particular brand of appliance satisfy the relationship 
where S(x) represents the number of sales in year x, with x = 0 corresponding to 1990. For what years will sales be between 1960 and 2320?
A. Between 4 and 7 B. Between 1993 and 1996 C. Between 1992 and 1995 D. Between 1993 and 1995
Solve the polynomial inequality.(x + 7)(x2 - 9) > 0
A. (-?, 3) ? (3, 7) B. (-7, 3) C. (-?, -3) ? (3, ?) D. (-7, -3) ? (3, ?)
Determine whether or not the function is one-to-one.
A. No B. Yes
Solve the problem.Ariel, a marine biologist, models a population P of crabs, t days after being left to reproduce, with the function 
. Assuming that this model continues to be accurate, when will this population become extinct? (Round to the nearest day.)
A. 547 days B. 707 days C. 1512 days D. 911 days