Direction: Find the product of the following using the special product formulas if necessary. Show your solution. 1. 3(3x+2y) 2. 4a(2a+a+3) 3. 2a(1-3a) 4. (2a+2b) (2c+2d) 5. (3a-4)(a+7) 6. (4x+2y)(x+y)
Breathing rate increases to provide the body (exercising muscles) with oxygen at a higher rate. Heart rate increases to deliver the oxygen (and glucose) to the respiring muscles more efficiently.
