Dominick's puppy weighs 8 pounds and is gaining about 1 3/4 pounds each week, what's the rate of change

Which statements are true? see picture

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays