Which problem could be solved by evaluating the expression 7×(-3) a. a pool is being filled. the water level rises 3 centimeters every minute. what is the change in water level after 7 minutes? b. amber removes 7 pounds of apples from a barrel. then she uses double this amount to make apple pies. how many pounds of apples does she use? c. a cold front comes in and causes the temperature to drop 3 degrees every hour. what is the change in temperature after 7 hours? d. jarod has $7 in his pocket. he gives $2 to his mother. how much does he have now?