Determine the equation of the inverse of y=2^3x-1

Which of the following could be the graph of the equation y = -2x + 5

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

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.