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Math·Algebra·Linear functions

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Area (square feet)	Water (gallons)
560	1,008
840	1,512
1,120	2,016

The roofs on the buildings of a public garden are designed to allow water to drain into the garden. The table shows the relationship between the area $x$, in square feet, of a roof and the amount of water $f(x)$ in gallons, drained from the roof into the garden over a certain period of time. Which equation could define f?

A

$f(x)=0.6x$

B

$f(x)=1.8x$

C

$f(x)=504.0x$

D

$f(x)=1,008.0x$