What is the first step to prove that 9^n-4^n is divisible by 5? a. Show that 91 -41 = 5
C. Assume that 91 -41 = k
b. Verify that 91 - 41 = 5
d. Prove that 91 -41 = k +1

i would say c is the best answer, hope it's right!

good luck! =)

cutie~

step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°