Question

7. Mr. Nelson is checking some of the school's sport balls to make sure they are in good shape and properly inflated. Use the table of recommended air pressures to define the ranges for properly inflated balls.

Ball

Average recommended psi
(pounds per square inch)

Tolerance

Soccer ball

12.05

±3.55

Basketball

8.00

±0.5

Volleyball

4.44

±0.18

Part I: Write an absolute value inequality for the recommended air pressure range for each type of ball. Use the variable x for the ball's actual air pressure. (3 points)


Soccer ball:



Basketball:



Volleyball:












Part II: Choose one type of ball and write an absolute value inequality describing the air pressure of balls outside the recommended range. (1 point)












Part III: What is the appropriate range for air pressure for the type of ball you selected in Part II? Hint: Look back at your answers to Part 1 to choose the absolute value inequality to solve. (3 points)