Sports physiologists at an Olympic training center want to monitor athletes to determine at what point their muscles begin to function anaerobically. They could do this by checking for a buildup of .

They could do this by checking for a buildup of lactic acid.

Explanation:

Without oxygen glucose disintegrates in anaerobic respiration. The chemical process transmits energy to the cell from glucose. Anaerobic respiration does not contain carbon dioxide and water, but generates lactic acid. That can unintentionally lead to intense muscle cramps. Lactic acid has also been utilized as a by-product of energy metabolizing glucose and a waste product that has triggered burning muscle feeling. Research indicates, though that concentration of lactate can help alleviate the burn or muscle cramp produced throughout physical activity with higher intensity.

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.