Question

A nearby pond has 5 frogs, and the population doubles every year. The inequality 5(2)^t>75, where t is the number of years, models when the population of frogs will be greater than 75.

Based on the inequality, when will the population of frogs in the pond be greater than 75?

t>4 years
t>7.5 years
t>2 years
t>1 year

Answer 1

4 and 7.5 years will be greater than 75

Explanation:

4 year 10,20,40,80

7.5 years 10,20,40,80,160,320,640,960