1. A person who can be a universal blood donor has the blood type known as O+. True False 2. Solve the following equation: 3*(4²+2) -4 a. 52 b. 56 c. 50 d. 764 3. Find the value of "x" in the following equation: 3x = x + 8 a. 2 b. 4 c. 8 d. 10 Study Online Instantly 4. A person who is anemic is deficient in a key element that is also the primary component of blood. What element is this? a. Thulium b. Iron c. Tin d. None of the above Click to Save 50% Now 5. The two systems of the body that are responsible for removing waste are the digestive system and the circulatory system. True False 6. If a student writes an essay to demonstrate his or her knowledge of a particular topic, what form of writing is he or she engaging in? a. Narrative b. Research c. Expository d. Nonfiction