Whenever you try to find the unit value do you multiply or divide

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.

What are the relative frequencies to the nearest hundredth of the columns of the two-way table? a b group 1 102 34 group 2 18 14

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.