{y=x−7
{ 5x+2y=7

use the substitution method.

a- (−1, −8)
b- (3, −4)
c- (7, 0)
d- (0, −7)

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?