(I NEED THE ANSWER'S ASAP) Determine whether each statement is true or false.
(a) If 3 and 5 are factors of a number, then 15 is a factor of the number.
(b) If 246 is a multiple of a number, then 123 is a multiple of the number.

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?