The function f is continuous over -1 a) (x+1)/(x-3)
b) (x-3)/(x+1)
c) (x+1)(x-3)
d)1/(x+1)(x-3)

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315