Free points since i'm halfway to the Genius rank which is the highest rank : D

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

What is the equation of the parabola with focus (-1,-1) and directrix y=1?

Solve the equation for x. 50(4x + 12) = 200