travels farther by substituting y=0 in each equation and finding 1. 61. Percent Profit Ace Jewelry Store sold a necklace for $144. If the percent profit (based on cost) equals the cost of the necklace to the store, how much did the store pay for it? Use P= 100 . where P is profit and C is cost. Answer 62. Tourism Spending The global spending on travel and tourism (in billions of dollars) can be described by the equation y=1.48x 25.23x + 416.91 where x equals the number of years past 1990 (Source: World Tourism Organization). Find the year afte 1990 in which spending is projected to reach $1968 billion. ons to 2024, total annual