13. the outboard engine on steve's boat uses a fuel-to-oil mixture in a 50: 1 ratio. if steve puts 2.5 gallons of fuel in the tank, how many fluid ounces of oil does he need to add?

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points