Simplify the expression by combining like terms.7a - 2a - a - 13

A. 5a - 13
B. 5a - a - 13
C. 5a - 14
D. 4a - 13


Answer: D

Mathematics

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A.  hr
B.  hr
C.  hr
D.  hr

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Solve the problem. Round to the nearest tenth, if necessaryThe part is 1.5 and the whole is 5.25. Find the percent.

A. 14.3% B. 28.6% C. 350% D. 2.9%

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Translate the sentence to an equation using x as the variable. Do not solve the equation.six more than a number is equal to sixteen.

A. 6 - x = 16 B. x = 16 + 6 C. x - 6 = 16 D. x + 6 = 16

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Solve the problem.The volume of a rectangular box with square base and a height of 5 feet is V(x) = 5x2, where x is the length of a side of the base. Find the instantaneous rate of change of volume with respect to x when x = 3 feet.

A. 45 ft3/ft B. 30 ft3/ft C. 15 ft3/ft D. 6 ft3/ft

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