A sky driver falls 56 m each second the sky driver waits 8 second before opening her parachute. Use an integer to express the change in the skydriver's elevation

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

In basketball, some baskets are worth two points. others are worth three points. in one game, the ratio of three-point baskets to three-point tries for one team was 5 font size decreased by 5 : font size decreased by 5 : 6. if the team scored 75 points from three-point baskets, how many three-point tries did the team have?

Which of the following would not be the result of a substitution in the following system? 2x + y = 7y - x= 1a. 7 - 2x- x = 1b. 2x + x + 1 = 7c. 2(y + 1) + y = 7