Explain how marker proteins works and why it is important.

Hi there

 The disease-fighting system uses these proteins to tell friendly cells from foreign (people or things who suddenly enter a place in an unwanted way). They are as (like nothing else in the world) as fingerprints. They play an important role in organ transplants.

Hoped I Helped

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.