Which equation can be used to find the volume of a sphere that has a radius of 9 miles?

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.

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10