Which algebraic expression is equivalent to the expression below?

(4x + 12) + 9x

A. (4x + 12x) + 9

B. 25x

C. (4x + 9x) + 12

D. (4x - 9x) + 12

The number of basic headphones the store can purchase if it spends a total of $10,000 on headphones and buys 110 HD headphones for $70 each.

Matt needs to type a 10 page paper in three hours. he plans to type the same number of pages each hour. write an expression that represents the number of pages matt will type each hour?

Which expression are equivalent to 2.5-4 (1.5-10) + 3 their are multiply answers

Find the volume of the rectangular prism 8, 9, 2

Sam has 100 feet of fencing. Does he have enough fencing to enclose a circular region whose area is 630 square feet? Show work!

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Each time Nicholas mows a lawn he uses 1/6 of a gallon of gasoline. If he has 2/3 of a gallon of gasoline, how many lawns can he mow before he needs to buy more gasoline

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