Which ordered pairs a solution of the equation 3x-4y+2=9

a. only (9,5)
b. only (-2,-3)
c. neither
d. both (9,5) and (-2,-3)
please help!!

Cindy uses 1-inch cubes to find the volume of a jewelry box shaped like a rectangular prism. she uses 780 cubes to completely fill the jewelry box with no gaps or overlaps. if the jewelry box is 13 inches long and 5 inches wide, how tall is cindy’s jewelry box?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.