20.) what is the solution of the system of equations?
y = 3x + 7
y = x – 9

a.) (–1, –10)

b.) (–17, –8)

c.) (–8, –17)

d.) (4, 19)

c

step-by-step explanation:

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 %

its line 2 i just added the rest or else it wouldn't let me answer

i don't know

step-by-step explanation: