Answer and Step-by-step explanation: An equation represents proportional relationship when dividing the quantities of the equation results in a quotient that is always the same. For example, in general:
Equation: y = mx
= m
m is a constant value, which means is the same.
A. Equation: 120 - x = L
Equation from alternative A is NOT proportional since the division of the quantities doesn't result in a constant.
B. Equation: 1.08p = t
Dividing total cost per item's price, will always give the sales tax, which is constant. So, this equation IS proportional.
C. Equation: 
This equation is proportional because dividing marbles per how much each sister gets, always gives the number of sisters:
D. Equation: 
This equation is NOT proportional because side length is squared, so it is not constant linearly.
Answer:
60 ounces
Step-by-step explanation:
İf she can make 10 brownies with 12 ounce mix then
For 50 she would need 5 × 12 = 60 ounces
Slope-intercept form of a line:
y=mx+b
m=slope
b=y-intercpet
Data:
m=5
b=8
the equation of the line will be:
y=5x+8
Answer: y=5x+8
Answer: D: The model predicts that a person who does not walk each day will score about 48.1 on the test.
Step-by-step explanation:
Given: A psychologist collects data on the time, w, in minutes, people walk each day and their scores, t ,on a stress test.
She finds that there is a negative linear association between w and t that is best modeled by the equation 
.
When we put w=0 minutes, t=48.1
It implies that if any patient doesn't walk will score 48.1.
Hence, the model predicts that a person who does not walk each day will score about 48.1 on the test.
1.) (9*2)-(9*-1)
2.)4*(9+1)
3.)A:GCF=5
B:5*(20-15)
4.) 7x+14
