1. the invalid relation is the 4th choice
2. you can conclude that the 2nd choice is correct.
Question 7:
Set up a ratio:
<u>388 students</u> = <u>x students
</u>1552 cartons 2820 cartons<u>
</u>Cross multiply and divide. 388 X 2820 = 1094160 / 1552 = 705 students
Question 8:
Add up hours and divide by people working.
5+9=13/2= 6.5 hours
<u />
Answer:
y=7/9x-2
Step-by-step explanation:
This is the formula to follow when doing these equations
y=slopex (-/+) y-intercept
if it a negative it a - intercept if it a positive intercept if adding.
We are going to want to change any mixed number into an improper fraction. 2 3/4 is 11/4 and 1 2/5 is 7/5.
We are going to set up a proportion where the lbs are on the top and the money is on the bottom. x is going to be how much it costs for 2 3/4 lbs of lunch meat.
(7/5)/3.36 = (11/4)/x
Cross multiplication \/
7/5x = 9.24
x = 6.60
As a final answer, the 2 3/4 lbs of lunch meat cost $6.60
