Linear functions are given in the form:
y = mx + n
m slope
n y-intercept
Inserting the given values:
-4 = -1m + n
1 = 2m + n
Solve for m and n.
All you have to do is try out both of the equations with each of the different choices.
200 = 45 (3) + 20
200 = 135 + 20
200 = 155
200 = 35 (3) + 60
200 = 105 + 60
200 = 165
So, this one does not work.
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180 = 45 (3) + 20
180 = 135 + 20
180 = 155
180 = 35 (3) + 60
180 = 105 + 60
180 = 165
So, this one does not work.
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200 = 45 (4) + 20
200 = 180 + 20
200 = 200
200 = 35 (4) + 60
200 = 140 + 60
200 = 200
So this one works.
The answer would be C.
I hope this helps and I'm sorry it took so long!
Answer:
21
Step-by-step explanation:
The height is 21 because it says it right there on the right.
I think the answer is 12/20 or 3/5 because out of the 20 marbles you are drawing 4 orange and 8 blue and replacing it. So 8+4=12 and there are 20
