In 10 ​years, a​ child's age will be 7 years less than triple her current age. Write an equation for which the solution gives the​ child's current age. Use the variable x to represent any unknown quantity. Do not solve the equation.

Eric is driving an average of 39 miles per hour, and he is 109.2 miles away from home. After how many hours will he reach his home? Assume Eric will reach home after h hours. Write an equation to model this scenario. There is no need to solve it.

A car’s value depreciates by 7% every year. It was purchased for $12000. Write an equation for the value of the car       What will it be worth after 4 years?       How long will it take for the car’s value to fall to half the purchase price? (Answer in years and months to the nearest month).

A football team earns 6 points for a touchdown and 3 points for a field goal. In one game, a team scored a touchdown and some field goals. The total points the team scored is 18 points. Write an equation using the variable F that can be used to find the number of friend goals the team scored.