Okay so john ran the diameter on the park
emily ran the circumference
πd = the circumference
therefore emily ran further
QR =12 because you set up a proportion 21/14=x/8 then cross multiply and get 14x=168 then you divide and get 12
Answer: C.
Explanation: A function only has one y value for every x value. This means that an x cannot have more than one y value. You can do the vertical line test on graphs to figure out if it is a function or not. In this case, graph C is the only one that passes the vertical line test.
The equation is y= (5/2)x - 29. Hope this helps
