Write an algebraic expression that models the following statement: Half the difference of '8' and 'q'.

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

What is the simplified form of square root of 400 to the 100th power ?