Write a function rule to describe the amount of change c(x) from a $20.00 bill you get if you buy x hamburgers for $2.45 each.
Write a function rule to describe the amount of change c(x) from a $20.00 bill you get if you buy x...?
f(x) = 20.00 - 2.45x
Reply:c(x)=20-2.45x
Reply:c(x) = 20 -2.45x
Your change is equal to $20 minus [the price per hamburger times the number of hamburgers].
Reply:i dunno.
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