Mario opens a store credit card when he purchases new carpeting. the interest rate is 20.45%. he charges $3,240 to the card, and can pay $1,150 per month. what will the total cost of his purchase be?
$3,240.00
$3,349.36
$3,902.58
$4,289.36

people grow faster than other people.

step-by-step explanation:

should you really be posting this isn't math boi.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!