Kate took a test and she got a grade between 80% and 95%, inclusive. what is the greatest percent error she could have?

What is the distance between (–2 1/2,-3) and (1, –3)?

Can someone tell me if this is perpendicular? !

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?