Carbon monoxide is a poisonous gas because it competes with the gas that binds to hemoglobin in red blood cells. Which of the following would be most directly affected by carbon monoxide poisoning? A. Fat digestion
B. Cellular respiration
C. Synthesis of proteins
D. Breakdown of wastes

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.