Rewrite the equation of the circle in vertex form.
x2 + y2 - 2y - 15 = 0

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)