Help Will give brainlist

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.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?