Uhh help .. pls um i have to make it 20 characters long so yeah don’t mind this bye

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.