Question

A watering can dispenses water at the rate of 0.20 gallon per minute. The original volume of water in the can was 8 gallons.
Which set of ordered pairs shows the volume of water in the can in gallons (y), as a function of time in minutes (x), from the first minute after can starts dispensing water?
▲{(7.8, 1), (7.6, 2), (7.4, 3)}
▲{(1, 7.8), (2, 7.6), (3, 7.4)}
▲{(8.0, 1), (7.8, 2), (7.6, 3)}
▲{(1, 8.0), (2, 7.8), (3, 7.6)}

Answer 1

@NathaliaMA13 Do you have any ideas?

Answer 2

@AnswerMyQuestions I do but I'm not quite sure if they're right.

Answer 3

Tell me which one you think it is.

Answer 4

So every minute, you subtract.

Answer 5

@answermyquestions {(1, 8.0), (2, 7.8), (3, 7.6)} i think that one

Answer 6

Wait!

Answer 7

I think that's wrong. o.o

Answer 8

Thank you. ☺

Answer 9

Oh, yes, It is incorrect.

Answer 10

wait. how?

Answer 11

The first minute, you would have to subtract 8 - 0.2

Answer 12

The first minute doesn't stay at 8.

Answer 13

@AnswerMyQuestions so it'd be {(1, 7.8), (2, 7.6), (3, 7.4)} than?

Answer 14

Yes! :D

Answer 15

okay Thanks !! ☺

Answer 16

No problem!