13. what reactants and products are in common with both
aerobic respiration and anaerobic respiration?

As a Reactant Glucose and as a product ATP and Co2 is common in Anaerobic and Aerobic Respiration

Explanation:

The "molecular process" that breaks down glucose, produces waste products, and energy is called respiration. Respiration has two types. These are "Anaerobic and Aerobic respiration". Oxygen is needed for Aerobic respiration but in Anaerobic respiration there is no need of oxygen.

Carbon dioxide and water are the waste product which is extracted in the Aerobic respiration and Anaerobic respiration produced alcohol or lactic acid or some other product as a waste product.  

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15