Amy is playing a song on her banjo. She plays an average of 90 notes per minute in her song. What does she need to do to find the average number of notes per second?

She needs to divide 90 by 60.

Step-by-step explanation:

There are 60 seconds per minute so if you want to know notes per second you would divide 90 by 60.

1.5 notes per second

Step-by-step explanation:

You need to divide the notes per minute by the seconds in a minute

90÷60=1.5

24 units

step-by-step explanation:

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: