Write an expression for each situation. then solve the problem. "a man's age today is 2 years more than three times the age his son will be 5 years from now. let a represent the son's age today. write an expression to represent the man's age today. then find his age if his son is now 8 years old."

Find the solution of this system of equation -7x+y=-20 9x-3y=36

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.

You borrow $25,000 to buy a boat. the simple interest rate is 4%. you pay the loan off after 10 years. what is the total amount you paid for the loan?