Question

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?

Answer 1

Try c.
7x-3=-21=temperature drop in 7 hrs
☺☺☺☺

Answer 2

C.

3 degree of temperature is decreased every hour.
so total temperature difference in one hour is -3

and in 7 hours, the difference is 7 * -3