3.2a-1-4 1/3a+7-a (a) What are the like terms in the expression?
(b) Simplify the linear expression.

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

What else equals 42 and 30 for multiply

Atourist boat is used for sightseeing in a nearby river. the boat travels 2.4 miles downstream and in the same amount of time, it travels 1.8 miles upstream. if the boat travels at an average speed of 21 miles per hour in the still water, find the current of the river.