Callie's Craft Store offers knitting lessons. They charge $25 for the class and another $3.75 for each roll of yarn that a student wants to use. How many rolls of yarn did Sandra use if it cost her $40 to take the class? Let r represent the number of rolls of yarn that Sandra used. Which answer choices show the correct equation and solution for this situation? Choose two answer choices, one for the correct equation and one for the correct solution. 0 3.75r = 40 Or = 1.45 Or = 4 Or= 40 0 25 + 3.75r = 40 25r + 3.75 = 40 40 - 25r = 3.75