How much sugar does the recipe for a full batch of cookies call for

Step-by-step explanation:

2/3 cup is 1/4 of recipe to total, then X would be 4/4 of the recipe.

2/3              X

  =    

1/4                 1

Cross multiply and you get x/4 = 2/3, simplfy to 3x=8, divide by 3 and you get 8/3 of a cup for the whole recipe. 8/3 is the same as 2 and 2/3 cup

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

step-by-step explanation: