Question

Brenna is making brownies. She wants to make an extra pan for her grandparents, so she is doubling the recipe. If the original recipe calls for n units of an ingredient, she uses 2n units for her doubled recipe. The original recipe calls for 1.5 teaspoons of vanilla extract.

Answer 1

Well, she’s using double the amount of ingredients so you need to double 1.5. 1.5 x 2 = 3. She needs 3 teaspoons of vanilla extract.