Points A, B, C, and D lie on the circle. Solve for the value of X
А. 65
B. 70
C. 79
D. 78

Can somebody me out with this question

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Kristen is wrapping presents for the holidays. she has a box that measures 4 ft. x 2 ft. x 2 ft. how many square feet of wrapping paper does she need to cover the box without overlapping?