Write an algebraic expression that represents each purchase.
a. Dr. Lin bought x number of soccer balls and 4 baseballs.
b. Nestor, Felix, Peter, and Hao are on a baseball team. They each bought a baseball and x pairs of sweat socks.
26. Suppose x has the same value in both of the expressions you wrote for 25. Are the two expressions you wrote for 25​ equivalent? Explain.
27. Sophia says that the algebraic expression 4
4
5x​, where x represents the cost of a​ baseball, describes the cost of a soccer ball. Do you​ agree? Explain.