100% - 30%=70%
70% : $308 = 100% : x
70x = 308x100
70x = 30800
X = $440
Original =$440
(x + 5)(x - 8) = x^2 - 3x - 40
They are not factors of x^2 - 2x - 30.
You have the area of the squares
100 in^2
area of a square = l*w
so length and width of the square both equal 10in
there are 4 squares going across the semi circle so...
diameter of semicircle is 10+10+10+10 =40in and radius is 20in
to find area of semicircle the formula is 1/2 pi r^2
so plug in the numbers 1/2(3.14) (20)^2 = 628 in ^2
now add that to area of big square part of window
40 inches length * 40 inches width = 1600in^2 (or you can just add them all up )
add up the areas now 1600+628= 2228 in^2
i think that is right
214 x 1.32 = 282.48
Hope that helps
Step-by-step explanation:i think you have to divide then mulitiply