Directions:Use the power rule to simplify the following monomials. 14.) (3x³y)⁴ - (7x⁵y)² • x²y²
13.) (2a²)³ + (a⁴)(3a²)
12.) (6a²b)³ • (1/3 abc)²
6.) (1/2 a³b⁴c⁵)³

ANYONE PLEASE HELP ME I REALLY NEED THE ANSWER RIGHT NOW I HOPE Y'ALL CAN HELP ME:(
I'LL MARK YOU AS THE BRAINLIEST!​

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work