Beginning with Rodney's first month of high school, his father deposits $5 into Rodney's savings account. Each month after the first month, his father deposits $2 more than the previous month. The total amount deposited in Rodney's

account after four years can be represented using the expression 2 [5+2(n-1)]. How much total money has been

48

n=1

deposited?

$2,496

O $2,544

O $2,640

O $2,688

Yes

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

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!