The  inventory  of  a  store  2  years  ago  was  worth  $45,000.  this  year  it  is  worth  $49,500.  what  is  the percent  increase?

Can someone me out here number 4 plz

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Kayla made observations about the sellin price of a new brand of coffee that sold in the three different sized bags she recorded those observations in the following table 6 is $2.10 8 is $2.80 and 16 is to $5.60 use the relationship to predict the cost of a 20oz bag of coffee.