Can someone with this problem simplify v^5 -v-v^4

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute

What is the correct decimal form of 12%