Mudrik installed a device on his car that guaranteed to increase his gas mileage by 10%. the gas mileage increased by 3 miles per gallon after installing the device. how many miles per gallon did he get before the device was installed?

What properties allow transformation to be used as a problem solving tool

How do you solving the solution of each system using elimination?

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.