Each month, Ryan gets a $30 allowance and earns $120 mowing lawns. He uses the expression 30x + 120y to keep track of his earnings. Part A: Identify the variables and coefficients in the expression. (3 points)

Part B: How many terms are in the expression, what are they, and how do you know? (4 points)

Part C: Which term in the expression shows the total earned from mowing lawns? (3 points)