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  • Ok, it’s 1 dollar per topping plus $10 just for the pizza and we’re splitting the price. It’s 50 cents for toppings on half a pizza and 25 cents for toppings on a quarter of the pizza.
  • Little Anthony's Pizza
  • Ok, it’s 1 dollar per topping plus $10 just for the pizza and we’re splitting the price. It’s 50 cents for toppings on half a pizza and 25 cents for toppings on a quarter of the pizza.
  • So let’s solve: z=price each person pays y=# of toppings. z=(0.25y+20)÷4
  • I want 2 toppings, Sara wants none, Merihan wants 2, and Maya wants 1. 5 total toppings, so when we solve, substitute y for 5
  • a=10-(5.31+b)
  • Then let’s do a quarter of the pizza with each person’s toppings, since there are 6 different toppings we want.
  • Today's Special! Solve: Z=[(0.25xY)+20] ______________ 4
  • Y is 5.
  • Huh?
  • Ok, z=[(0.25x5)+20]÷4
  • Well, z=[(1.25)+20]÷4, because you start in the parentheses. Then z=[21.25]÷4. Finally, z≈5.31.
  • So for lunch, we each pay $5.31! Now, since we all brought 10 dollars, let’s eat!
  • Um...I don’t know.
  • We almost forgot drinks! Sara and Merihan both want $2 drinks, and Mayaand I want $2.50 drinks. How much do we pay?
  • a=amount we each have leftover; b=amount each person pays for drinks.
  • Oh...ok!!
  • Well, (2.50x2)+(2x2)=9÷4=1.25. B=1.25. What does A equal?
  • You can say that again!
  • Best lunch ever
  • Now I know to solve an equation with 2 variables! you substitute what you can and solve it like normal to find the value of the other variable!
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