4. Marcus invested $4280 in a savings account that compounds interest monthly at a rate of 8.5%. If he leaves the money in the account for 6 years without making any
additional deposits or withdrawals, how much money will he have in his account at the end of 6
years?

ask your self frist how many months is in 6 years that would be 72 months so now you have 8.5% interest on the amount of $4280 for 72 monthsthe interest gained in 72 months would be $3047.37$4280+$3047= $8727. I think but not 100% sure

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents