​Use the Position Equation S = -16t² + V₀t

Multiple Choice

​Use the position equation s = -16t² + v₀t + s₀ to write a function that represents the situation and give the average velocity of the object from time t₁ to time t₂. An object is thrown upward from a height of 38 feet at a velocity of 84 feet per second.
T₁ = 1,t₂ = 3

A) ​s = -16t² + 38t + 84;avg.velocity = 79 ft/s
B) ​s = -16t² + 84t + 38;avg.velocity = 125 ft/s
C) ​s = -16t² + 38t + 84;avg.velocity = -26 ft/s
D) ​s = -16t² + 84t + 38;avg.velocity = 20 ft/s
E) ​s = -16t² + 84t + 38;avg.velocity = 40 ft/s