Question

http://prntscr.com/b5enu7

Answer 1

You're half correct.

For a fraction, neither the numerator nor denominator can equal zero.

3 will make the numerator = 0

9*3 - 3 * 3^2 =

9*3 - 3* 9 = 0

Answer 2

so its b

Answer 3

Yes!