Please actually answer and not jus comment!

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

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)