Determine if each pair of ratios or rates are equivalent. Explain your reasoning. 15 blank CDs for $5; 45 blank CDs for $15 HELP I´M GONNA FAIL

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

If f(x)=x+7 and g(x)=1/x what is (fog)(x)