Each calculator sold for $12.67 . So 5 would be $63.35
The answer is 64 boys are in the soccer league.
X/160 = 40/100
X/160 * 100 = 40/100 * 100
5x/8 = 40
(8 * 5x)/8 = 40 * 8
5x = 320
5x/5 = 320/5
x = 64
2 goes into all the terms so;
2(-2x² + 7x - 3) now you could factor it:
2(-2x - 1)(x + 3)
