Aboat goes 15 mph in still water, and the rate of the current is t mph. (a) what is the rate of the boat when it travels upstream? (b) what is the rate of the boat when it travels downstream?

a) 15-t mph;

b) 15+t mph.

Step-by-step explanation:

a) When the boat travels upstream, the current hinders the boat (the speed of the boat decreases). Thus, the speed of the boat upstream becomes

15-t mph.

b) When the boat travels downstream, the current helps the boat (the speed of the boat increases). Thus, the speed of the boat downstream becomes

15+t mph.

2/3x + 7 = 29

step-by-step explanation:

two thirds = 2/3

plus a number = x

at least 29 = 29

there for you should get 2/3x + 7 = 29