A group of adults and children go to the movies. The total number of people is 25
Each adult paid $9 Each child paid $5.50 and the total
bill was $150
Define x and y:
Write a system (2) equations to model the situation:
What are the numbers of people (children?) (Adults?)

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?