Find a complex number for which f (a + bi) is a real number. Which of the following complex number would give you a real number
when evaluated in the function f (x) = x2 + 4x + 7
a. 2-3i
b. 1-2i
c. 4+2i
d. -2-4i

equal to

step-by-step explanation:

may i see the picture? it would a lot, xox

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 %