Multicellular organisms must be protected from the external environment. because of this, cells of even the simplest multicellular organisms are arranged to form an external barrier of

Hey there!!

Your answer is epithelial tissue. This tissue is the one that does it part to protect all of the other cells around too or form the external barrier.

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Ans

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.