Question 464745
I don't know what this other tutor is up to...


We can let P and L be the cost of the parts and labor respectively. If we say that the cost is exactly $6300, then


P + L = 6300


3900 + L = 6300 --> L = $2400.


If the cost is *at most* $6300 then it simply becomes an inequality:


3900 + L <= 6300 --> L <= $2400.