Please help me out :/

If you could show work please tysm

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

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.

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have