Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer.  - 

A. -5
B. -5x
C. -5x
D. 7x


Answer: C

Mathematics

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Add or subtract measurement numbers, rounding to the correct precision.17 mph + 38.6 mph + 65 mph

A. 120 mph B. 120.5 mph C. 120.6 mph D. 120.7 mph

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There are 65 students in Jose's class.   of the students are science majors. How many students are science majors?

A. 39 B. 24 C. 130 D. 26

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Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 

A. Not one-to-one
B. f-1(x) = 
C. f-1(x) = x2 - 9, x ? 0

D. f-1(x) = (x + 9)2

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Convert. When necessary, round the answer to two decimal places.4 gallons = ____ pints

A. 34
B. 68
C. 8
D. 17

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