Identify the correct equations for this system. A puzzle expert wrote a new puzzle book. His initial costs are $870. Printing cost is $1.20 per book. The books sell for $4.50 each.
Variables: b - # of books, d = total dollars

The empire state building in new york city is 1454 feet tall a model of a building is 24 inches tall what is the ratio of the height of the model to the height of the actual empire state building

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

Which graph has a rate of change of zero