Please help no guessing please I need this .

B. 7x-5

Step-by-step explanation:

Since x is an unknown variable, the product of 7 and x would be 7x. We are subtracting 5 from that and not 7x from 5, so it would be 7x-5.

4

step-by-step explanation:

im pretty sure it's 4 beacsue 8/2 equals 4

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 %