Answer:
A. System:
y = 0.05x + 28
y = 0.07x + 25
B. Substitute:
0.07x + 25 = 0.05x + 28
C. At what number of miles will the cost the same?
150
Step-by-step explanation:
Let y = cost. Let x = number of miles.
Five Star CArz:
y = 0.05x + 28
GoCars:
y = 0.07x + 25
System of equations:
y = 0.05x + 28
y = 0.07x + 25
Substitute y of the first equation with 0.07x + 25
0.07x + 25 = 0.05x + 28
0.02x = 3
x = 150
The costs are the same at 150 miles.
Slope = (change in 'y') / (change in 'x')
If you find two points where the line goes through the corners of boxes,
then count up the 'y' boxes and the 'x' boxes between those two points,
you'll find that the line rises 3 y-boxes for each x-box.
The slope of the line is 3 .
Answer:
D. 100
Step-by-step explanation:
1. Find the z-score: 165-176/11.4 = -1.2
2. Find the percentage of the z-score. Here it's 16.85%
3. Because we are searching for the amount of members that weigh MORE than 165 pounds and not LESS, we need to find the greater percentage by subtracting 16.85% from 100% which is 83.15%. This is the percentage of people that weigh more than 165 pounds.
4. Multiply the percentage by the number of members: 83.15%*120 = 99.78
5. Round it to a whole number because someone can't be 0.78 of a person. You get 100 members.
Also, I took the test :)
Answer:
Yes
Step-by-step explanation:
Substitute the x value in the ordered pair for the x in the equation, or 2, and the y-value (6) in for y. So, 2 + 6 = 8, and this is true. Then do 3(2) - 6 = 0, which is also true.
