On february 1, the electricity meter reading for the smith residence was 19,423 kilowatt hours. on march 1, the meter read 20,288 kilowatt hours. on april 1, the meter read 21,163 kilowatt hours

do i do it on a graph?

step-by-step explanation:

the answer is b

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %