I RLLY NEED HELPPP ITS STEM AND LEAF DIAGRAMS!!

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

An amusement park manager determined that about 23 of all customers would wait in long lines to ride the new roller coaster. which simulation could not be used to answer questions about whether a customer would wait?

Amanufacturer knows that their items have a normally distributed lifespan, with a mean if 9.1 years, and standard deviation of 2.9 years. if you randomly purchase one item, what is the probability it will last longer than 10 years?