Answer:
The ideal equation form to write this in would be "y=mx+b" because it involves a starting amount (which is represented by "b") and a certain constant amount of something ("m") being fed into that starting amount over time ("x" which will be substituted for "w" because the math problem wants us to substitute). Plugging in the number's you get:
y=30w+200
Explanation:
y---> total amount saved after plugging in all numbers including time
m--> amount of money/stuff being added to the starting point over time
x---> can represent time, or basically any independent variable that decides how long has the stuff been being fed into the overall number
b---> the starting point (in this case it is 200, in other cases it can be anything, even a negative number)
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