Answer:
p=0, p=.25
Step-by-step explanation:
p*(4p-1)=0
p=0. when the product of factors equals zero at least one factor is zero
4p-1=0
p=1/4 or .25
I'm not sure
78×.33=25.74 busses are new
25.74+15=40.74 new busses
78+15=93 total busses
40.74/78=0.5223076923= 52% will be new with the new 15 busses
169.333333333