If you put <em>x</em> for "a number,"
2/3(x) + 4 = 7
2x/3 = 7-4
2x/3 = 3
x = 2
4x^2 + 5x - 8 + (- 4x^2 - 5x + 8) = 0
all ur doing is changing the signs so they will cancel each other out.
so ur adding : -4x^2 - 5x + 8
I think the 3 is an exponent so we can write the expression as
18 * 4y^3
= 72y^3
Amanda can buy 20 nectarines with $16
