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- anonymous

What are the domain and range of the function?
y = 3x^2
A:
https://k12va.aplusanywhere.com/R85Content/media/pictures/algebra1a/4-2-2-16a.gif?ts=1433575356267
B:
https://k12va.aplusanywhere.com/R85Content/media/pictures/algebra1a/4-2-2-16b.gif?ts=1433575356267
C:
https://k12va.aplusanywhere.com/R85Content/media/pictures/algebra1a/4-2-2-16c.gif?
ts=1433575356267
D:
https://k12va.aplusanywhere.com/R85Content/media/pictures/algebra1a/4-2-2-16d.gif?ts=1433575356267

At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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- anonymous

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- anonymous

I want to say C, I could be very wrong though, (these are not my strong points at all lol )

- Jack1

graph attached for reference if it helps?

- anonymous

domain:X|XER and range: [2,infinite)

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- Jack1

...?

- anonymous

ok the graph, X has to be equal to or over 0 correct?

- Jack1

no, x can be all +ve or negative numbers

- Jack1

y values (output / range) is stuck in the +ve range tho...

- zepdrix

|dw:1433586811172:dw|Yah, our x is going all the way right and left.
It's going up much faster than it's moving right or left, that might make it a lil confusing. But we WILL cover all the x's.

- anonymous

oh wait no >.< I messed up sorry I get x and y mixed up, so y has to be equal or over 0? so A ?

- zepdrix

yay good job \c:/

- anonymous

sorry I said x first XD I always get confused on those but yea I understand how the x (domain) is going out infinite so it had to be the y that is equal to or greater than 0, thank you! One more cool? :D

- Jack1

yeps, A ;)
all good hey, shoot

- anonymous

A train travels at a steady rate of 80 mph. If the train travels for one-half hour nonstop, what are the domain and range of the distance function during the trip?
A:
Domain: t = 0.5 ; Range: d(t) = 40
B:
Domain: 0 =< t =< 0.5 ; Range: 0 =< d(t) =< 40
C:
Domain: t = 0.5 ; Range: d(t) = 80
D:
Domain: 0 =< t =< 0.5 ; Range: 0 =< d(t) =< 80

- anonymous

I wanna say C

- Jack1

hmm... k
so distance over the time of the trip is between 0 and 40 miles..., so I'd lock in range as between 0 and 40 (depending on time) yeah?

- Jack1

ummm... and domain... in this case relates to time (t) so your domain is between 0 and a 1/2 hour... so domain = 0 to 0.5

- anonymous

If we're gonna lock in 0 to 40 our only choice would be B, so B right? lol

- Jack1

i think i'd go B in this case

- Jack1

yeps, B ;)

- anonymous

awesome! let's see :D

- anonymous

Yes you got it right! 80% thank you soo much :) and than you for teaching me these new things! :DDDD

- anonymous

thank*

- Jack1

np, u did the work hey ;) and props on ur score!

- anonymous

thanks :)

- anonymous

Have a great night, morning or afternoon! :)

- Jack1

night, and totes ;) u 2

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