Solve the problem.The length and width of a rectangle have a sum of 180. What dimensions will give the maximum area?
A. 90 by 90
B. 45 by 45
C. 89 by 91
D. 45 by 135
Answer: A
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Provide an appropriate response.A farmer bought 120 piglets at the local auction. He was able to raise 115 of them to market weight. What percent, to the nearest tenth percent, of loss did he incur?
A. 95.8% B. 1.04% C. 4.2% D. 4.1%
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.A whispering gallery is a room in the shape of an elliptic reflector. If a source of sound is placed at one focal point of an elliptic reflector, the sound is reflected through the other focal point. If one person speaks at one focal point, then another person at the other can hear sounds as faint as a whisper. If the whispering gallery is based on the ellipse 
+ 
= 1, how many units from the center of the ellipse would the two people stand?
A. 26 units B. 24 units C. 10 units D. 100 units
Divide. 2/5 / (2/5)
A) 1 B) 4/25 C) -1 D) - 4/25 E) 25/4