17. Admission prices to Cinema I to see a movie are $9.50 for an adult and $6.50 for a child. The admission charge at Cinema II is $8.00 per person regardless of age.
a. Write an inequality showing that the prices are cheaper at Cinema I than at Cinema II.
b. If 6 adults and their children go together to see a movie, use the inequality to find how many children must attend for
Cinema I to be the better deal.