please help!!!! :( :( :/ :/

the graph below shows a company's profit f(x) in dollars, depending on the prices of pens x, being sold by the company.

part a) what do the x intercepts and maximum value of the graph represent?what are the intervals where the function is increasing and decreasing and what do they represent about the sale and profit?
part b)if at one time the profit of the company was at least 60 dollars, what domain could possible produce this profit?
c)what is an approximate average rate of change of the graph from x=3 to x=5 and what does this rate represent?

Question

please help!!!! :( :( :/ :/


the graph below shows a company's profit f(x) in dollars, depending on the prices of pens x, being sold by the company.

part a) what do the x intercepts and maximum value of the graph represent?what are the intervals where the function is increasing and decreasing and what do they represent about the sale and profit?
part b)if at one time the profit of the company was at least 60 dollars, what domain could possible produce this profit?
c)what is an approximate average rate of change of the graph from x=3 to x=5 and what does this rate represent?

anonymous · Answer

@ikram002p

anonymous · Answer

attachment

ikram002p · Answer

a) what do the x intercepts and maximum value of the graph represent? 

$\large \text{do u know what does x intercept means ?}$

anonymous · Answer

its where the line crosses on the x axis of the graph?

ikram002p · Answer

yess ur correct in other way , its x values  that make the function f(x)=0 ,
so in ur graph what are the x intersect ?

anonymous · Answer

0?

ikram002p · Answer

humm well 0 is f(x) value at x intersect
when it ask abt x intersect that mean what is the x values 
here a sketch not neat but i hope its good :P
 |dw:1397167489458:dw|

ikram002p · Answer

here x1, x2 are x intersect
u can see that f(x1)=0
and f(x2)=0
so what is x1, x2 value ?
|dw:1397167673837:dw|