Monifer used substitution to solve this system of equations. which equation could be the result of her first step? 3a +b=225 b=a-15

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.

Consider the first four terms of the sequence below. what is the 8th term of this sequence?

How do i take any fraction and make it into a decimal or percentage?