Algebra I

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Algebra I. Systems of Equations y = mx + b form (Substitution). Pizza, Pizza!!!!.

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Algebra I

Systems of Equations

y = mx + b form

(Substitution)

Pizza, Pizza!!!!
• A large pizza at Palanzio’s Pizzeria costs \$6.80 plus \$0.90 for each topping. The cost of a large cheese pizza at Guido’s Pizza is \$7.30 plus \$0.65 for each topping. How many toppings need to be added to a large cheese pizza from Palanzio’s Pizzeria and Guido’s Pizza in order for the pizzas to cost the same, not including tax?
“Go Mountaineers”

Some students want to order shirts with their school logo. One company charges \$9.65 per shirt plus a setup fee of \$43. Another company charges \$8.40 per shirt plus a \$58 fee. For what number of shirts would the cost be the same?

Clowning Around

Mrs. Travis wants to have a clown deliver balloons to her secretary’s office. Clowns R Fun charges \$1.25 per balloon and \$6 delivery. Singing Balloons charges \$1.95 per balloon and \$2 for delivery. What is the minimum number of balloons Mrs. Travis needs to purchase in order for Clowns R Fun to have a lower price than Singing Balloons?

Sport Drink Wars

The sales of Gizmo Sports Drink at the local supermarket are currently 6,500 bottles per month. Since New Age Refreshers were introduced, sales of Gizmo have been declining by 55 bottles per month. New Age currently sells 2,200 bottles per month and its sales are increasing by 250 bottles per month. If these rates of change remain the same, in about how many months will the sales for both companies be the same? How many bottles will each company be selling at that time?