A website is offering a promotion, during which customers can buy up to 100 photos for a flat fee. The cost per photo varies inversely with the number of photos a customer buys as shown in the table below. What function models the data?
Number of photos (n) 20, 40, 50, 80
Cost per photo in cents (n) 5, 2.5, 2, 1.25
Notice all the products equal 100. 20 x 5 = 100. 50 x 2 = 100 , etc.
So it’s nc = 100
let n = the number of photos
let c = the cost per photo (in cents)
nc = 100 cents
that was pretty easy…what is your problem ??