Question

The number A of tablet
complrters sold (in millions) can be modeled by the
functionA : 4.5t2 + 43.5t * 17, where /represents
the year after 2010.

A . In what year did the tablet computer sales reach
65 million?
B . F'ind the average rate of change from 2010 to 2012 and interpret the meaning in the context of
the situation.
C . Do you think this model will be accurate after a new, innovative computer is developed? Explain.

Answer 1

So you want to know when A=65
solve the equation 65=4.5t^2+43.5t*17 (if that is the right equation; kind of wonder if you meant to put +17 at then end instead of *17)

Answer 2

for B
evaluate:
\[\frac{f(2)-f(0)}{2-0} \\ \text{ since } t=2 \text{ actually means 2 years after 2010 which is the year 2012}\\ \text{ and since } t=0 \text{ means the year 2010}\]

Answer 3

I substitute a = 65
I solve t=1
Then 1+ 2010 = 2011 ?

Answer 4

right I don't think they care about what happened before 2010...
you know because you do get also t=-10.6667 as a solution

Answer 5

which I would take that to mean like little more 10 years before
but like I said I don't think they care about what happens before

Answer 6

how I do B?

Answer 7

oops those f were suppose to be A's

Answer 8

sorry evaluate:
\[\frac{A(2)-A(0)}{2-0}\]
there does that make more sense ?

Answer 9

That is the average rate of change of A from the year 2010 to 2012 (aka t=0 to t=2)

Answer 10

ok I see

Answer 11

hanks

Answer 12

np

Answer 13

C?

Answer 14

C) I don't know...The economy is always changing...But I think they are making computers cheaper... There will be more people. Some people will be fine with their old computer and won't think it necessary to purchase another computer.

Answer 15

Thanks

Answer 16

That question might require some research.

Answer 17

For example I don't even know if the function they gave is a great model currently for any computer type available without doing any research.

Answer 18

ok, I will try search for C, Thanks

Answer 19

what do you think @dan815

Answer 20

I no idea
I have to go , thanks bye

Answer 21

sry i wasnt here