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Mathematics 20 Online
OpenStudy (yuii):

Lily hikes at least 1 hour but not more than 3 hours. She hikes at an average rate of 2.2 miles per hour. The distance Lily hikes in t hours is modeled by a function. http://prntscr.com/diapmt

RhondaSommer (rhondasommer):

I believe D, simply because it would be all real numbers in between. :)

OpenStudy (kittiwitti1):

at least one hour: lower bound 1 at most 3 hours: upper bound 3

OpenStudy (kittiwitti1):

\[\{D~|~1\le t\le3\}\]

OpenStudy (kittiwitti1):

based on this, calculate y-values for endpoints \(x=1\) and \(x=3\)\[2.2\times1=2.2\]\[2.2\times3=6.6\]

OpenStudy (kittiwitti1):

therefore range:\[\{R~|~2.2\le f(x)\le6.6\}\]

OpenStudy (kittiwitti1):

C) is the domain, but they want the range... B) isn't likely since we have set point bounds. That leaves A) or D)

RhondaSommer (rhondasommer):

All real numbers apply though?

RhondaSommer (rhondasommer):

Because she could stop at anytime.

OpenStudy (kittiwitti1):

Yes. I was getting to that.

RhondaSommer (rhondasommer):

kk

OpenStudy (kittiwitti1):

@Yuii you okay with that?

OpenStudy (yuii):

Okay with what?

OpenStudy (kittiwitti1):

The answer lol

OpenStudy (yuii):

Oh lol Sorry, it's D right?

OpenStudy (kittiwitti1):

Yep

OpenStudy (yuii):

Thank you both.

OpenStudy (kittiwitti1):

No problem. \(\checkmark\)

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