The cost of renting a car is $39 plus $0.75 per mile is it linear or exponential

What could explain what happened when the time was equal to 120 minutes

3women sell hats at a craft fair weekly. the money they make at the fair is split into categories. 9% goes to pay taxes. $55 goes to pay rent for the space they sell in. the rest is split between the women. if the group make $706 at the fair, how much does each women get paid once the money is divided

Rationalize the denominator- 12x/√x-10