C Consider a square whose size varies. Let's represent the side length of the square (in cm) and let P represent the perimeter of the square (in cm). a. Write a formula that expresses P in terms of s. Preview b. Consider the equation 18 = 4s. i. Solve this equation for s. S = Preview ii. What does this solution represent? Select all that apply. The perimeter (in cm) of a square whose side length is 4.5 cm. The square's current side length (in cm). The side length (in cm) of a square whose perimeter is 18 cm. c. Write a formula that expresses s in terms of P Preview d. Evaluate your formula from part (c) for P = 18. Preview Enter a mathematical expression [ more..]