What is the area of the following circle?
Either enter an exact answer in terms of r or use 3.14 for and enter your answer as a decimal.

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.

Which of the following graphs represents the function f(x) = 2^x

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6