Find the sum.42 + (-13)
A. -55
B. -29
C. 55
D. 29
Answer: D
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Round the number to the nearest tenth.3.751
A. 3.75 B. 3.8 C. 3.751 D. 3.7
Answer the question asked. When necessary, round to the nearest hundredth.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 50 mph B. 80 mph C. 40 mph D. 20 mph
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
Find the slope of the line through the given pair of points.(8, -5), (4, -5)
A. 4 B. -4 C. 0 D. undefined