Can anyone help with this? find st and rt​

If g^-1(x) is the inverse of g (x) which statement must be true

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)