Helen rented a kayak at the lake. there is a charge of $8 as an initial fee and then $2 an hour for every hour that she uses the kayak. if the total charge is $20, how many hours did she kayak?

The product of two negative rational numbers is always zero sometimes zero never zero

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?