What is the domain and range in interval notation of problem #2 in the attached document?

Question

anonymous · Answer

attachment

ghazi · Answer

$$(-\infty,\infty) $$

anonymous · Answer

Why?

ghazi · Answer

because your function is y=3x+7 and this is defined for whole real numbers

ghazi · Answer

@hiralpatel121  clear??

anonymous · Answer

Okay. So the the answer is the same for both the domain and the range?

hartnn · Answer

domain means all the values that t can take so that the function does not become complex,or become undefined
if we observe in V(t) = -203t+9655 
for any value of t ,V(t) will be defined.
so domain=(-infinity,infinity)

ghazi · Answer

yes

hartnn · Answer

range mean all the values V(t) can take
as its a linear function,it can take infinite values depending on infinite values of t
hence range is same.

hartnn · Answer

still doubts regarding this?

anonymous · Answer

No, I've got it. I need help with doing parts of number 1 though. I tried to do it but then I got confused.

hartnn · Answer

find all x where f(x)=304 
this??

ghazi · Answer

3x+7=304
3x=304-7
3x=297
x=99

anonymous · Answer

That would be the answer for where f(x)=304?

ghazi · Answer

yes

anonymous · Answer

What about parts (d) and (e) for number 1? How would I do those?

hartnn · Answer

for part e, same logic as #2
same domain,range.

ghazi · Answer

you have set of points like let's say two variables are x and y now you have (-6,-11) , (-2,1) and (0,7) plot this on graph paper

ghazi · Answer

your graph will tell you the domain and range

anonymous · Answer

Okay, thank you.

ghazi · Answer

:) YW