Sam and Freda both paid their credit card bills in full. Each person made returns that resulted in credits to their accounts. Sam's new Balance is -$36, and Freda's is -$42. Which person has more money credited to his or her card? Also, I'm in 7th grade and I don't really know how to manage this website, so this is just a little info for my question.

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?