The Bridgeport water department has a monthly service charge of $13.10 and a usage charge of $1.10 for every 100 cubic feet of water. Which of the following equations can be used to determine the monthly water bill of a Bridgeport resident? (Let x represent the amount of water used in hundreds of cubic feet and y represent the monthly cost.)
A.
y = 1.1x - 13.10
B.
y = 14.2x
C.
y = 0.011x + 13.10
D.
y = 1.1x + 13.10

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!

id

step-by-step explanation:

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i know the way

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