The first one because it’s (13(31)
Negative exponents work like this:

So, in order to evaluate a negative exponent, you simply have to invert the base, and then raise to the positive equivalent of the exponent.
As an example, here are the first three exercises:



You can work out the rest applying this logic.
It should be 8473x 38473 93
Answer:
A.
Explanation:
4 goes up 2 to 6. 6 goes up 3 to 9. 9 goes up 4 to 13. Therefore, you can expect 13 to go up 5 to 18, and 18 to go up by 6 to 24.
∠ABC is an inscribed angle.
In a circle, the measure of an inscribed angle is half the measure of the intercepted arc. m∠ABC = 48° ⇒
measure of arc AC = 2*m∠ABC = 2 * 48 = 96°.