Solve the problem.Find the slope of the tangent to the curve of the intersection of the cylinder 
and the plane y = -9 at the point 
A. 2
B. - 
C. 
D. 0
Answer: B
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Solve the variation problem.The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 5 feet from a light is 2 foot candles, find the intensity on a screen 15 ft from the light.
A. 
foot-candles
B. 
foot-candles
C. 2 foot-candles
D. 1
foot-candles
Multiply.20 × 5 × 5
A. 5000 B. 50 C. 600 D. 500
Make the indicated conversion within metric units of mass.396 grams to milligrams
A. 0.0396 mg B. 396,000 mg C. 0.396 mg D. 39,600 mg
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