The formula a = m − n represents the actual cost, a, of an item with original price m after a coupon for n dollars off is applied. Solve the formula for the amount of the coupon. Group of answer choices n = a − m
n=m−a
n=a+m
n = −m − a

ALSO THERES THIS QUESTION TOO

Deon plans to ride a 15-mi bicycle trail. If his average speed is 20 mi/h, which equation can he use to find the time t, in hours, for the ride? Group of answer choices
T = 20 - 15
T = 20 / 15
T = 20 x 15
T = 15 / 20
PLEASE HELP FAST