A particle moves along a straight line and its position at time t is given by s(t)=2t3−18t2+48t where s is measured in feet and t in seconds. A) Find the velocity (in ft/sec) of the particle at time t=0.
B) The particle stops moving (i. e. is in a rest) twice, once when t=A and again when t=B where A C) What is the position of the particle at time 12?
D) Finally, what is the total distance the particle travels between time 0 and time 12?

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true