B = -0.015t + 2.84 . N/ w.g
t = 5 hours
w = 110 lb
g = 0.55
N = 1
substituting these values into the above equation
B = -0.015(5) + 2.84 x 1 / 110 x 0.55
open the parentheses
B = - 0.075 + 2.84 / 60.5
following the order of operation
pemdas : division before addition
B= -0.075 + 0.04694
B= -0.02806
B = - 0.03
The answer is -0.03