Can someone help me on this?? I need help

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.