What is the x-value in the solution to this system of linear equations?

2x+3y=3

7x-3y=24

a. (2,7)
b. (3,-21)
c. (3,-1)
d. (9,0)

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?