Recall the formula for area of a circle. 1. Write an equation relating a circle's radius, r, and area, A.
2. Is area a function of the radius? Is radius a function of the area?
3. Fill in the missing parts of the table.

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).

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew