Ineed with questions 4 through 6 if there is someone who can me with these questions i would greatly appreciate it.

What is the pattern in the values as the exponents increase?

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

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?