Solve the problem.The table below gives the total spectator attendance for various sports. 
Determine to the nearest tenth the midrange of these attendance numbers.
A. 37.9 million
B. 37 million
C. 21.7 million
D. 35.8 million
Answer: D
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Change to decimal numbers.
A. 4.7 B. 0.36 C. 0.047 D. 0.47
Solve the problem.A square wave is built up from sinusoidal curves of varying periods and amplitudes. Graph the following function, which can be used to approximate the square wave.f(x) = 
0 ? x ? 4 
A better approximation to the square wave is given by f(x) = 
style="vertical-align: -17.0px;" />0 ? x ? 4 
Graph this function and compare the result to the previous graph. Adding another term will improve the approximation even more. Write this new function with four terms.
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
Solve the problem.The number of bacteria growing in an incubation culture increases with time according to 
where t is time in days. After how many days will the number of bacteria in the culture be 169,600?
A. 10 days B. 1 day C. 5 days D. 6 days