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(03.04 MC)
Two pieces of bread, banana and whole wheat, were left out on a kitchen counter and mold began to grow on them. The area of mold growth B(t), in mm2, on the piece of banana bread present after time t weeks, can be represented by the equation B(t) = 40(1.02)t. The area of mold growth W(t), in mm2, present on the piece of whole wheat bread after t weeks is represented in the table.

t
(in weeks) 1 2 3 4
W(t)
(in mm2) 31.2 32.45 33.75 35.10
Which statement best compares the mold growth rates of the banana bread and the whole wheat bread?
a The mold growth rate of the banana bread was three times the mold growth rate of the whole wheat bread.
b The mold growth rate of the banana bread was twice the mold growth rate of the whole wheat bread.
c The mold growth rate of the banana bread was half the mold growth rate of the whole wheat bread.
d The mold growth rate of the banana bread was a third the mold growth rate of the whole wheat bread.

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