Me with this i'm confused if the answer is "none of these" or "space"

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x