MATH SOLVE

2 months ago

Q:
# Which problem could be solved by evaluating the expression 7×(−3)?A pool is being filled. The water level rises 3 centimeters every minute. What is the change in water level after 7 minutes?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?A cold front comes in and causes the temperature to drop 3 degrees every hour. What is the change in temperature after 7 hours?Jarod has $7 in his pocket. He gives $2 to his mother. How much does he have now?

Accepted Solution

A:

The problem could be solved by evaluating the expression 7×(-3) is"A cold front comes in and causes the temperature to drop 3 degreesevery hour. What is the change in temperature after 7 hours?" ⇒ 3rdStep-by-step explanation:We need to find the problem that could be solved by evaluating theexpression 7 × (-3)Let us write an expression for each problemA pool is being filled. The water level rises 3 centimeters every minute. What is the change in water level after 7 minutes?∵ The water level rises 3 centimeters every minute∴ The rate of change is 3 cm/min∵ The time is 7 minutes∴ The change in water level after 7 minutes = 7 × 3∴ The expression is 7 × 3Amber 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?∵ Amber removes 7 pounds of apples from a barrel∵ She uses double this amount to make apple pies∴ The number of pounds of apples she uses = 7 × 2∴ The expression is 7 × 2A cold front comes in and causes the temperature to drop 3 degrees every hour. What is the change in temperature after 7 hours?∵ The temperature drop 3 degree every hour∴ The rate of change is -3 degree/hour∵ The time is 7 hours∴ The change in temperature after 7 hours = 7 × (-3)∴ The expression is 7 × (-3)Jarod has $7 in his pocket. He gives $2 to his mother. How much does he have now∵ Jarod has $7 in his pocket∵ He gives $2 to his mother∴ He has 7 - 2∴ The expression is 7 - 2The problem could be solved by evaluating the expression 7×(-3) is"A cold front comes in and causes the temperature to drop 3 degreesevery hour. What is the change in temperature after 7 hours?"Learn more:You can learn more about the expressions in brainly.com/question/3638399#LearnwithBrainly