Denise attends a book sale at her local Library each year. The library sells books it no longer wants at a discount to the publi
c. She pays a fixed admission cost, plus $3 for each book she decides to purchase. Write a formula that describes how much Denise spends at the book sale.
a = cost of admission n = number of books she buys t = total cost of attending the book sale
We define the variables: p: cost of bushel of peaches w: cost of watermelon We wrote the system of equations: 12p + 5w = 150 15p + 8w = 198 We can represent the system in matrix form as Ax = b Where, A = [12 5; 15 8] b = [150; 198] x = [p; w]
