Make 27 into 3^3, then since the bases are the same, solve (x-1) = 3. The answer is 4.
F(3) occurs when x =3. So lets plug 3 into our equation.
F(3) = -28
I hope this helps! :)
Remember that the general equation of a line is

, where:

is the slope, and

is the y-intercept; so to find the y-intercept, solve for

and identify

.
Now, to find the x-intercept, just replace

in your line equation with

, and solve for

Lets apply those procedures to our two questions:
1. - y-intercept:




Notice that now we have our line equation in the form

with

and

; sine

is the y-intercept, we can conclude that the y-intercept of our equation is 8.
x-intercept:
First, lets replace

with

:

And then, we can solve for

to find our x-intercept:



We can conclude that our x-intercept is -4; thus the correct answer in your list is the fourth one:
x-intercept is -4; y-intercept is 8.
2. y-intercept:




We can conclude that our y-intercept is 20.
x-intercept:




We can conclude that our x-intercept is 16; thus the correct answer in your list is, once again, the fourth one:
x-intercept is 16; y-intercept is 20.
Answer:
whats your question im confused
Step-by-step explanation:
4 ÷ 25 = 0.16, so 0.16 of a gallon is used per chair. The answer lies between 0 and 1.