Explain how to write and evaluate an algebraic expression. one more than the product of a number and seven, decreased by five; evaluate when n = 6
(PS, I'm giving brainliest and its worth 30 points)

i'm assuming it's looking for the missing length, which should be 4cm

hope this !

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: