Answer:
x-intercept: (2,0)
y-intercept: (0,3)
Step-by-step explanation:
We are asked to graph our given equation
.
To find x-intercept, we will substitute
in our given equation.




Therefore, the x-intercept is
.
To find y-intercept, we will substitute
in our given equation.




Therefore, the y-intercept is
.
Upon connecting these two points, we will get our required graph as shown below.
1/4 times 2(n-14)= 10, 1/2 times (n-14)=10, 1/2n-7=10, n-14=20, n=20+14, n=34
Answer: 50,000 miles.
Step-by-step explanation:
We know that the sample mean
is the best point- estimate of the population mean
.
Given : In sample of 100 newly developed automobile tires, the average tread wear was found to be 50,000 miles and with a standard deviation of 3,500 miles.
i.e. 
s=3,500 miles.
Then, the best estimate of the average tread life
in miles for the population of these tires is 50,000 miles.