Which value of x is in the domain of f(x) = \sqrt {x - 8}f(x)= x−8
?
A. x = 10
B. x = 7
C. x = –8
D. x = 0

Can some one me with these questions

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π

Percent increase and decrease. original number: 45 new number: 18