Need this quick!

Find the sum.

7 х + 15 х=

A. 21x

B. 21x^2

C. 22x

D. 22x^2

Solve the equation for y. Then find the value of y for each value of x. 2x - 5y = 17; x = - 3, 0, 3 Solve the equation for y

The cross-sectional area of a water pipe is 5058 square inches. to the nearest tenth, what is the diameter of the pipe in inches?

What is the range of (3.2,-3)

For the given expression, use the Associative Property of Multiplication to enter an equivalent expression. (ab) c = ?

At a certain college, 30% of the students major in engineering, 20% play club sports, and 10% both major in engineering and play club sports. A student is selected at random. What is the probability that the student is majoring in engineering?

At the city museum, child admission is $ 5.20 and adult admission is $ 9.40. On Monday, 148 tickets were sold for a total sales of $ 1051.00. How many child tickets were sold that day?

For tax reasons, I need to create a rectangular vegetable patch with an area of exactly 32 sq. ft. The fencing for the east and west sides costs $4 per foot, and the fencing for the north and south sides costs only $2 per foot.

Katherine drove 112 miles in 4 hours. If she continued at the same rate, how far would she travel in 15 hours?

X2 = x + 12 Solve this

Mary has a small round mirror in her purse. If the mirror is 4 inches in diameter, what is the area of the mirrored surface?