The answer is - a.error caused by selecting a bad sample
(-4)^-6*(-4)^7 = (-4)^1 = -4
answer a. -4
if the degree of the expression of the numerator is greater than that of the denominator, the rational expression has no horizontal asymptote.
f ( - 2 ) = 5 × 3^( - 2 )
f ( - 2 ) = 5 × 1/9
f ( - 2 ) = 5/9