Just need someone to check my answers.
find f ^-1(x)
f(x)= 3squareroot x-3 = f^-1(x)= x^3+3

Simply the expression, if possible log 0.0001 = -4

A theater has 29 seats in the first row, 42 seats in the second row, 45 seats in the third row, and so on. a. Can the number of seats in each row by modeled by an arithmetic or geometric sequence? b. Write the general terms for a sequence a n that gives the number of seats in row n. = n19=29+(19-1)3
c. How many seats are there in row 19 = 83

Question

Just need someone to check my answers. 
find f ^-1(x) 
f(x)= 3squareroot x-3 = f^-1(x)= x^3+3 

Simply the expression, if possible log 0.0001 = -4 

A theater has 29 seats in the first row, 42 seats in the second row, 45 seats in the third row, and so on. a. Can the number of seats in each row by modeled by an arithmetic or geometric sequence? b. Write the general terms for a sequence a n that gives the number of seats in row n. = n19=29+(19-1)3 
 c. How many seats are there in row 19 = 83

anonymous · Answer

@satellite73  or @amistre64

anonymous · Answer

1) $$y=3\sqrt{x+3}\implies{y\over3}=\sqrt{x+3}\implies{y^2\over9}=x+3\\implies x=\boxed{\Large{y^2\over9}-3=f^{-1}(x)}$$

anonymous · Answer

is my understanding of your f(x) is correct, then your inverse for that is wrong.

anonymous · Answer

ooh you had it this way?
1) $$y=\sqrt[3]{x-3}\implies y^3=x-3\implies x=\boxed{y^3+3=f^{-1}(x)}$$
2) correct
3) you mean "55" in the third row? then yes.

anonymous · Answer

How did you get 55?

anonymous · Answer

in the third question, you used arithmatic progression. I do not see it in the way you wrote.