Which of the following is an example of how a scientist might use a model? A wrench is used to tighten a nut onto a piece of wood.

A microscope is used to magnify a group of cells on a slide.

The end of a slinky is moved vertically up and down to simulate a wave.

A stopwatch is used to time the rate of a chemical reaction.

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: