help with math problems

Question

The following formula describes the recent profit, P, in thousands of dollars, for a
company that just implemented a new marketing campaign. The variable, t, is time, in weeks, after
the campaign launch.
 
P = 9√?? + 20
 
a.  What is the profit one week after the campaign is launched ( t = 1)
b.  What is the profit four weeks after the campaign is launched ( t = 4) 
c.  What is the profit 25 weeks after the campaign is launched (t = 25)

Answer 1

Hi Kristen,

               I'll do one of the above, I think you will be able to do the other two.

 

P(t)=9*t^1/2 + 20

 

so when t=4 question B we have P(4)=9*4^1/2 + 20 = 39. So the profit is 39 after 4 weeks.

 

Hope this helps

 

Jim