Is this function odd or even and why

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

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