Comparing Rates:I kinda need help with the whole thing...

Mathematics

1 answer:

Stells [14]3 years ago

6 0

[1] Amount of water per minute
Water Miser: m = 3.0 gal/min
Watersaver: m = 2.5 gal/min
Waterstream: m = 1.5 gal/min

[2] Equations:
I would suggest using y = mx.
Water Miser: y = 3x
Watersaver: y = 2.5x
Waterstream: y = 1.5x

[3] For 6,8,10, and 12 minutes:
Plug in x = 6, x = 8, x = 10, and x = 12 into each of the three equations and record the y-values.

[4] Which would you buy?
Depends on your personal opinion.

Want to save the earth? Pick the one that uses the least amount of water.

Want to have a waterfall for a shower? Pick the one that uses the most amount of water. :)

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Step-by-step explanation:

Exponential Function

It's commonly used to model real situations in life, like this one proposed in the question where the number of milligrams of a drug D(h) in a patient's bloodstream h hours after the drug is injected is modeled by the following function.

$D(h) =40e^{-0.5h}$