How do you find the circumference of a circle?

The four students in the table below each recorded the time and distance traveled while exercising. exercising distance (miles) time (minutes) gia 2 30 harris 5 50 ian 3 40 jackson 4 80 which list ranks the students from fastest walker to slowest walker? jackson, gia, ian, harris harris, jackson, ian, gia harris, ian, gia, jackson jackson, harris, ian, gia

Which of the functions below could have created this graph?

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points