Cookies are on sale! Today each cookie costs $0.75, less than the normal price. Right now if you buy 7 of them it will only cost you $2.80.

Write an equation to determine the normal price of each cookie (c).

7 cookies will cost $2.80 right now

Find C = normal price

Cost today = C - $.75

(C - $.75) 7 = $2.80   (cost of 7 cookies today)

Divide both sides of equation by 7

 C - $.75 = $2.80 / 7

Add $.75 to both sides of equation

C = $.40 + $.75

C = $1.15

the figures below are made out of circles, semicircles, quarter … 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). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have