Write the ratio 42 inches to 9 feet as an fraction

Write each expression in exponential form and find its value.| ! 2 x 2 x 2 x 2

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 is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15