Which numbers are in the domain of the following function? (18,2) (12,9) (4,2) (5,7) 4, 2, 5, 12, 9, 18, 7

As we know that a relation is a set of ordered pairs.

Also we know that a function is a relation in which no two different ordered pairs have the same first coordinate.

Hence the given ordered pair represents a function.

Here in the ordered pair the x-coordinate represents the domain of the function, while the y-coordinate represents the range of the function.

Hence the domain of the function represented by the above ordered pair is

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: