9. the enzymes that catalyze cellular reactions are macromolecules made of organic compounds
composed of carbon, hydrogen, oxygen, and nitrogen. these types of macromolecules are known
as
a. starches
b. sugars
c. proteins
d. fats

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.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate