Speedy Printing charges $23 for 200 deluxe business cards and $35 for 500 deluxe business cards. Given that the cost is a linear function of the number of cards printed, find a formula for that function and find the cost of 700 business cards.

Answer 1

It would help if you proofread your questions before you posted them.

Since they are both "deluxe business cards," I would only get the ones at the lower rate.

23/x = 200/700

Solve for x.

Answer 2

But that formula does not account for the 39% discount given on the 500 cards.