consider the sequence below. 3, 1, 1/3, 1/9

select the explicit function which defines the sequence

A. f(n) = 1/3 • 2^(n-1)

B. f(n) = 2 • (1/3)^(n-1)

C. f(n) = 3 • (1/3)^(n-1)

D. f(n) = 1/3 • 3^(n-1)

; )

step-by-step explanation: ; )

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!