Answer:
20 dollars
Step-by-step explanation:
I think 20+20+20=60 then 60-40=20
Logarithm functions are the inverses of the exponential function the graph of the given function is attached in the given image.
The points for the given function are (1,0) (3,1) and (9,2)
Given that
Function; 
We have to determine
The graph of the function f(x).
According to the question
The logarithmic function is the inverse of the exponential function.
Function; 
To plot the graph of the given function we have to find the asymptotes;
Vertical asymptote at x =0
The point at x= 1 is,

The point at x= 3 is,

The point at x= 9 is,

Hence, the points for the given function are (1,0) (3,1) and (9,2).
To know more about the Exponential function given below.
brainly.com/question/3653847
Answer:
i wrote this as a decimal so um i hope this at least helps :). 1.75
Step-by-step explanation:
About 145 I gonna guess I dont know if that's right