A computer assistant, who works at home is making $4000 dollars per month and he decides to go to school and take specialized courses in computer science which costs him $1000 dollars per month to improve his skills. He is spending 16 hours a month in school. What is the opportunity cost of going to school?

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:

5 feet of chain cost $9

so the answer is 1.80