What does a regulatory buoy with a diamond symbol indicate?

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

The parabola opens: y=√x-4 (principal square root) up down right left

Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?