Out with my math and hurry you so much the amount of money in a bank account increased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by n, which expression represents the amount of money in the bank account after the increase? a) n + 0.215n b) n + 21.5n c) 0.215n d) 21.5n

idk

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have