Find a8 for the geometric series with r=2, s8=1020, a1=4

What could explain what happened when the time was equal to 120 minutes

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?