Answer:
Step-by-step explanation:
Y + 2 = 9
y = 7
y = zero-x + 7
<u>The y-intercept is 7.</u>
<u>The slope is zero.</u>
The graph is a horizontal line. That's the meaning of zero slope.
It crosses the y-axis at 7, and it's always 7 units above the x-axis.
The line is parallel to the x-axis, and never crosses it.
Answer:
-7k+21
Step-by-step explanation:
81 servings. I found this by making a ratio:
24 c 108 c
------- = -------
18 ser x
I then cross multiplied to get the equation: 24x=1,944. I solved this equation to find x, the number of servings in 108 cups, which was 81.
I remember doing this back in elementary school. I had a hard time with it too!
(74 + 78 + 70 + x) / 4 = 80
Divide each number by 4.
18.5 + 19.5 + 17.5 + x = 80
Add the numbers you know so far.
18.5 + 19.5 + 17.5 = 55.5
You need 24.5.
Now, since we divided all the others by 4, we have to multiply 24.5 by 4 to see what the exam score would be.
24.5 * 4 = 98.
To get an average of 80%, the student would need to get a 98 on their fourth exam.
