One side a rectangle is 8 ft shorter than four times another side. Find the length of the sides , given that the area of the rectangle is 780 ft^2. Enter both sides separated by comma.

What are the domain and range of f(x)=[1/5]x

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.