Using the distributive property, which expressions are equivalent to 12+4x?

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0