75 3. Evaluate / (60 -2x) dx. 25 Hint: Draw the graph of y = 60 - 2x, 25

75 (60 - 2m,) dr. 3. Evaluate 25 Hint: Draw the graph of y = 60 2:r, 25 75. 1 4. Use the properties of the definite integral to calculate 1 1 Hint: We have shown that 4) d:r.