Kiera is cleaning her neighbors garage. she is being paid a $25 flat fee and $8 per hour for each hour that she works. kiera makes a total of $81. how many hours did she work?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

How can you find the mean absolute deviation (mad) for this set of data?