Simplify the expression.1.3x + 5.7 + 4.9x - 7.8
A. 6.2x + 2.1
B. 6.2x - 13.5
C. 6.2x - 2.1
D. -7.3
Answer: C
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The graph of a function f is given. On the same axes, sketch the graph of f-1. 
A. 
B. 
Graph the piecewise defined function.
A. 
B. 
C. 
D. 
Solve the problem. If the base of the log is not specified, assume that it is 10.The sales of a new product (in items per month) can be approximated by 
, where t represents the number of months after the item first becomes available. Find the number of items sold per month 33 months after the item first becomes available.
A. 5225 items per month B. 1225 items per month C. 112,500 items per month D. 10,225 items per month
Use a graphing utility to approximate the real solutions, if any, of the equation rounded to two decimal places.2x4 - 5x2 + 7x = 14
A. {-2.31, 1.69} B. {-2.32, 1.70} C. {-2.31, 1.70} D. {-2.30, 1.69}