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A x-intercept is the time 60 minutes he has taken to travel to his destination.

B This represents the distance (60 km) away form the cars destination

C The domain is the values of the times ( what do you think the values are?)

@welshfella I dont understand C nor D. could you please explain more?

hi welsh

So about c i dont understand what domain (x) values they want

[0,positive infinitey)

oopps sorry I think they want a domain for Car A and another for Car B.

Oh okay

Thats the correct domain for car B
what about Car A?

could you give me the domain for car b and i figure it out for car a?

I got it so for A the domain would be [0,60)

Right?

[0 , +INF) is domain for car B

yes thats right for A

Yes as i said earlier so the domain for car A is [0,60)

no
60 is INCLUDED in the Domain so it is [0,60]

square bracket after the 60

Oh sorry i mean [0,60]

yes thats right

And you provided me with the answers for a and b right?

yes

So all i need is D please explain it cause i dont understand it what so ever

the average rate of change = average speed of Car 2 during the period 20 to 30 minutes

Okay

and this is (40-34) / (30-20) kms / minute

@welshfella Could you provide me with the answer im hopeless

what is 40 - 34 ?
and 30 - 20 ?
i'm sure you can do that

40-34= 6 and 30-20 = 10

what do i do with theese numbers?

right so speed = 6 / 10 = 0.6 kms/minute

Okay

this value represents the car's average speed between times 20 and 30 minutes

I hope this chart does not change our answers

@welshfella Is that right

the speed of car B will be different as i just read the values off the graph

speed = (40.05648 - 32.72904) / 10

ok so its .732744

So .732744 my average rate of change??

kms / minute Yes

yes

Okay so my Anser for part D is

Is that correct?

yes

Thanks for your help