Answer now i need on this test -20 = -4x - 6x ty ty tysm

Ten times the square of a non-zero number is eqaul to ninety times the number

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

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.