Question

The speed of the wind is changing according to the function V(t)=-1/2+30, where t=time in minutes after 6:00 p.m and V(t) = wind speed in miles per hour (mph). Which statement best describes the meaning of the equation V(20)-V(10)=-5? .

Answer 1

Answer: D

Step-by-step explanation: In a period of 5 minutes. the wind speed decreases from 20mph to 10mph