Yikes mctugg bought 1/2pound of potato salad . he ate 2/3of it for lunch .how much potato salad was left for an afternoon snack

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.

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Is there an x intercept in the equation 60*1.15^x