Look at the picture I added
Answer:
2X = Y
Step-by-step explanation:
To determine the equation that will allow to establish the amount of souvenirs bought by Aubrey (Y), taking into account that for each day of vacation (X) buys 2 souvenirs, the following must be taken into account:
The number of days (X) must be multiplied by 2. Thus, if you buy 2 souvenirs per day and your vacation lasts 4 days, you will have bought 8 souvenirs (4 x 2). Thus, the value of Y is equal to 2X, that is:
2X = Y
20% off means you paid only 80% of the original price.
0.8x=40
x=40÷0.8=50
so the original price is 50
I can do a factor expression
5(2x+7)
Is that what you want or is there something else
Check the picture below.
notice, is just a circle inscribed in a square.
now for the first one, we know the diameter is 14, so the square is a 14x14, and the radius of that is half the diameter or 7.
now, if we get the area of the square, which includes the area of the circle, and THEN get the area of the circle and subtract it from the square's, what's leftover is the shaded section.
![\bf \textit{area of a circle}\\\\ A=\pi r^2\\\\ -------------------------------\\\\ \stackrel{\textit{square's area}}{14\cdot 14}~-~\stackrel{\textit{circle's area}}{\pi 7^2}\implies 196-49\pi](https://tex.z-dn.net/?f=%5Cbf%20%5Ctextit%7Barea%20of%20a%20circle%7D%5C%5C%5C%5C%20A%3D%5Cpi%20r%5E2%5C%5C%5C%5C%0A-------------------------------%5C%5C%5C%5C%0A%5Cstackrel%7B%5Ctextit%7Bsquare%27s%20area%7D%7D%7B14%5Ccdot%2014%7D~-~%5Cstackrel%7B%5Ctextit%7Bcircle%27s%20area%7D%7D%7B%5Cpi%207%5E2%7D%5Cimplies%20196-49%5Cpi%20)
now, for the one on the right-hand-side, the radius is 8, and square's area is 16x16,