Solve the problem.A rock falls from a tower that is 208 feet high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground 
Round to the nearest tenth, if necessary.
A. 13.9 sec
B. 3.6 sec
C. 14.4 sec
D. 2704 sec
Answer: B
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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
Use the graph to determine whether the data represent direct variation, inverse variation, or neither.
A. Direct B. Neither C. Inverse
Perform the indicated operation. Write your result in a + bi form.
? 
A. 16i2 B. -16 C. 16 D. -16i
Find the derivative.y = 
A. 
B. 
C. 
D. x ex