Solve the problem.Jeremy's car got 240 miles (highway) on 8 gallons of gasoline. What was the mean number of miles expected per gallon?

A. 31 mpg
B. 29 mpg
C. 32 mpg
D. 30 mpg

Answer: D

Mathematics

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Use Chebyshev's theorem to solve the problem.Find the least possible percentage of numbers in a data set lying within 3/2 standard deviations of the mean. Give your answer to the nearest tenth of a percent.

A. 55.6% B. 44.4% C. 66.7% D. 33.3%

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Mathematics

Find the value of the expression.log 9

A. 2 B. 9 C. -9 D. -2

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Mathematics

Find the integral using tables of integrals. 

A. -  sin 4x cos2 4x +  +  sin 8x + C
B. -  sin 4x cos3 4x +  +  sin 8x + C
C. -  sin 4x cos3 4x +  +  sin 8x + C
D. -  sin 4x cos3 4x +  +  cos 8x + C

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Mathematics

Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.tan(? + 22°)

A. cot(112° - ?) B. tan(68° - ?) C. cot(68° - ?) D. cot(158° - ?)

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Mathematics