I'm not sure how to solve this, or find the formula

Question

4. Grinnell Glacier in Glacier National Park in Montana covered about 142 acres in 2007 and was found to be shrinking at about 4.4% per year. 

a. [2 pts] Let denote the area of Grinnell Glacier in acres in year , where is the number of years since 2007. Find a formula for and define the function in Desmos. (Use where a is the initial amount and r is the rate.)

Answer 1

G(t) = 142(1 + 0.044)^t = 142(1.044)^t acres