Answer only # 7, 8 & 9. These questions are about Data structures "Class" . please answer them all just in a sentence or 2.

6. Write the #include directive and a using statement that must be present for a main program to use the throttle class. 7. Which of the three forms from page 59 should be used when part of a namespace needs to be used within an actual header file? a) using namespace main savitch 2A; b) using main savitch 2A::throttle; c) main savitch 2A::throttle apollo; Which of these function calls could change the value of a point p: 8. cout