James has x quarters. His brother has 4 times as many quarters as James has. How may quarters do they have altogether?

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

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.