To make sure work is correct !

an equation was used to predict possible sales of phones for 6 months. the actual sales of phones are also listed.

actual sales 55 150 325 510 780 990
predicted sales 40 150 300 500 800 1,000

the sum of the residuals is
numerical answers expected!

i can

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: