Look at the problem below, EXPLAIN your answer.

the one below it is a function

answer is  

c.

36

step-by-step explanation:

the linear relationship that represents a variation in direct proportion is the linear function that varies according to the numbers of its domain, for example the cost of producing x number of items can be represented in direct proportion by f (x) = mx + b, where m is the constant of proportionality, x the number of articles produced and b the fixed cost

3 hours and 15 minutes

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