Which of the following states correctly describes the process of photosynthesis and cellular respiration

A. respiration creates a high level of carbon dioxide in the atmosphere

B. photosynthesis and respiration keep the levels of oxygen and carbon dioxide fairly constant in the atmosphere

C. photosynthesis creates a high level of oxygen in the atmosphere

B. photosynthesis and respiration keep the levels of oxygen and carbon dioxide fairly constant in the atmosphere.

Explanation:

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.

d

explanation: