A book shop owner orders some hardback and some SoftBank versions of a book. The hardback version costs the shop owner $20 each and the soft back $12 each. The total order was for 300 books. When the order arrives there were only 200 books. The shopkeeper wishes to query the order but cannot find his copy of the original order. However his records do tell him that it was going to cost him $5080. How many of each type of book was his original order for?

o= 4(i) +3

step-by-step explanation:

o is your output value and i is your input value. so, for example, if we stuck 7 in as our input, we would first multiply by 4 ( pemdas ), which equals 28. then we would add 3 to 28, for a total output of 31. this may not be a graph, but, it is a way to solve your formula..

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anser is a

step-by-step explanation:

negitive slope

i think that you should ask google for the answer to that problem because if we don't know it google does