Solve the problem.Suppose 
is a mathematical model for actual time as a function of estimated time, where f(x) represents actual time (in minutes), x represents estimated time (in minutes), and m and b are constants. If 
and b = -3.2, find f(x) when x is 30 minutes.
A. 29.8 min
B. 33.52 min
C. 36.2 min
D. 26.48 min
Answer: A
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Provide an appropriate response.Solve: 
? 2
A. 1 ? x ? 5 B. x ? -5 or x ? -1 C. -1 ? x ? -5 D. x ? 1 or x ? 5
Solve the inequality. Write the answer in interval notation.
?
What will be an ideal response?
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400
Determine the average rate of change for the function.h(x) = - 
x - 2
A. 2
B. - 
C. -2
D. 