I need help with this 3 questions

Question 1. Version 1*/1. Score: 0/3 An exponential function f(x) = a . b passes through the points (0, 5) and (2, 80). What are the values of a and b? a = and b = Score: N/A/1.5 N/A/1.5 Had help available: Video Post to forum Question 2. Version 1*/1. Score: 0/3 Find a formula for the exponential function passing through the points (-2, , ) and (1,20) y = Score: N/A/3 Had help available: Video [ Post to forum Question 3. Version 1*/1. Score: 0/2 A population numbers 20,000 organisms initially and grows by 16.9% each year. Suppose P represents population, and t the number of years of growth. An exponential model for the population can be written in the form P = a . bt where a = and b = Score: N/A/1 N/A/1 Had help available: Video EN Post to forum 1 6 24 APR