The price of a gallon of milk has increased from $3.24 to $4.05. what is the percentage increase?

percent increase = 25%

Step-by-step explanation:

The price of a gallon of milk has increased from $3.24 to $4.05

LEt x be the percentage increase

intitial cost + initial cost times percentage = new cost

Subtract 3.24 from both sides

divide by 3.24 on both sides

Multiply both sides by 100

x= 25 %

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.