Sandi bought a sandwich and a milkshake. She spent $12 in all. The equation s + 4.25 = 12 can be used to determine the cost of each sandwich. Which of the following os the solution to the equation?
A. $7.75. C. $16
B. $8.75. D. $16.25
explanation: To find s, we need to isolate the variable. Use the inverse property of addition to subtract 4.25 from both sides. s + 4.25 - 4.25 = s. 12 - 4.25 = 7.75. Now we're left with s = 7.75.
