I would first convert the mixed fraction into an improper fraction. To put it lightly, the reciprocal is the numerator and denominator are switched. For this instance it would be 4/37.
I think it’s A but I’m not sure
99 plus 9 tens?? if so, 189
1, 2, 3, 5, and 7 are all functions. 4, 6, 8, and 9 are not functions.