Answer:
The second and the third options are the correct answers.
Explanation:
For the second option, 8 times 3 would equal 24, and z^7 and z^4 would have its exponents to be added together to form a final answer of 24z^11.
For the third option, 9 and -3 would multiply to equal -27. a^5 and a^2 would multiply, causing their exponents to be added. The final answer for the third option would then be -27a^7