Carmen pays $20 to rent a scooter for 4 hours. The cost c, to rent a scooter is proportional to the number h of hours that she rents the scooter. Write an equation that represents the situation. How much would it cost Carmen to rent the scooter for 6 hours

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

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.