Please help me its my birthday and i would appreciate any help and i will also give a brainlist so hurry

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Which one ? is the answer and how to find this answer

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125