To figure this out, you set each of the x's to zero.
x+1=0, x-3=0, x-4=0
then, for each one you solve for x
x=(-1), x=3, x=4
these are your x-intercepts for the function f(x).
Answer:
Juan got 18.50 miles per gallon.
Step-by-step explanation:
We are given the following in the question:
Odometer in the beginning of trip = 1460.3 miles
Odometer at the end of trip = 1830.2
Gallons of gas used for trip = 20 gallons
Distance of trip =
= Odometer at the end of trip - Odometer in the beginning of trip

Thus, the trip was of 369.9 miles.
Miles per gallon =

Thus, Juan got 18.50 miles per gallon.
Answer:

Step-by-step explanation:
Given: Trey's test score average decreased by 14 points this semester.
To find: a signed number to represent this change in average.
Solution:
The decrease can be denoted by minus
sign and increase can be denoted by plus
sign.
So, a signed number to represent the change in test score average is 
Answer:
9600 words in an hour.
Step-by-step explanation:
There are sixty minutes in an hour.
60/6=10
multiply 960 by 10
960*10=9600
The secretary can type 9600 words in 1 hour.