Will give brainliest to first correct answer! A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the average rate of change? What is a point-slope equation for the climber?

A. 200;y-700=200(x-6)
B. 75;y-6=75(x-700)
C. 300;y-700=300(x-6)
D. 75;y-700=75(x-6)

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.