Joe has $150 in his saving account and saves $40 per month. Which equation represents the amount Joe has in his account after x months? 1. y=150+40
2. y=150x+40
3. y=40x+150

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).