My GF has been stuck on this problem forever and won't stop complaining. I will pay someone FG if they can answer this so I can get her to stop complaining.

Part b?
If you have graphing ti graphing calculator
Press y= button and plug in f (t) into y1 and g (t) into y2
press window button and change xmin to 0 xmax to 100 ymin to 0 ymax to 60
Then press 2nd+calc+5 . Then move Cursor close to intersection press enter enter enter.

Anewer is (11,36) , (98,25)

Could also type f (x) = g (x) into wolfram alpha to find 2 points and then plug in x into f to get y value if you don't have calculator

This post was edited by sentries on Nov 25 2015 01:20am

Thanks dude

glad to help

I'm plugging f(t) into y1 and g(t) into y2 as well as changing the window but then when I go to intersection my calculator says err: stat 1: quit…any idea on why it is doing this? Am i doing something wrong?
I tried to use the wolfram alpha but it wouldn't let me use the squared function.

for wolfram alpha you have to use ^

Without seeing what you are doing im not sure what exactly is going wrong with the calculator

but, you can solve by hand as well

set f(t)=g(t)
.011t^2 - 1.33t+49.5 = -.012t^2 + 1.18t + 24.7
.023t^2 - 2.51t + 24.8 = 0

Then use quadratic equation to get 2 solutions:

[-b + sqrt(b^2 - 4ac)]/2a
[-b - sqrt(b^2 - 4ac)]/2a

where a= .023 , b = -2.51 c= 24.8

alternatively, copy/pate that first line after f(t) = g(t) into wolfram alpha. get the 2 solutions.


Then plug t into either equation to get the second component of the point

This post was edited by sentries on Nov 27 2015 04:50pm

My GF thanks you!

Apparently you helped her more than her professor! (Online class)

Appreciate it dude