Evaluate the expression 1000(2^1.9) with no calculator

The heaviest 16% of all men in weight weigh more than how many pounds ?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.