Abank account earns 2.5% interest per year. if the account starts with $500, approximately how many years will it take for the value of the account to be $750?

Step-by-step explanation: What you need to do is add if it has 2.5%  interest per year. And t starts with 500 you could do 2.5 + 500 tell you get to 750 . Hope this helps

21.4 i did it already for s1

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