Kendra wants to pay 500 photographs into an album 6 photos to a page she figures that she will need about 100 pages

Which number produces a rationale number when multiplied by 1/5

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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.