Robert tutors two students, Andy and Susie. Andy pays Robert $70 per month. Susie pays Robert $50 per month. How many months will Robert have to tutor before he earns $600?

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

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

Ineed to know the answer to this algebra question.