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Sagot :
Answer:
y=18x+50
Step-by-step explanation:
We can use a graph to solve this. Using y=mx+b, we can replace these variables with numbers.
First, we need to find the y-coordinate. This can be solved with 50 because they begin with $50. So we have y=mx+50
Next, we need to find the slope. We can make points by choosing random balances. I'll choose (2,86) and (4,122). We can find the slope through rise/run, and get 36/2, which would be 18. Now we can put this here. y=18x+50
And that is our answer! You can also use f(x) in place of y.
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