Anna works at starbucks for $12 an hour. she also babysits for $10 an hour. she needs to earn at least $120 per week, but she does not want to work more than 20 hours per week. write a system of inequalities to describe the number of hours anna could work at each job.

Answer below

Step-by-step explanation:

12x+10y≥120

x+y≤20

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: