Answer the questions below. Note that a change can be an increase or a decrease. For an increase, use a positive number. For a decrease, use a negative number. (a)Maya owns 80 shares of a certain stock. Yesterday the value of each share went up by 10 dollars. What was the total change in value of her shares? dollars

(b)A private club was reduced by 63 members in 7 weeks. Its size changed by the same number of members each week. What was the change in the club's size each week? members​