Find the solution of this system of equations. separate the-x and y-values with a comma.

x=12+y
18x-12y=18

In what form is the following linear equation written y=9x+2

How do you find principle and simple interest

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.