19. A manufacturer of light bulbs knows that, out of every package of 5 sold, there is an expectation that 1 will be defective. A customer purchases 3 of these packages (a total of 15 light bulbs). What is probability that at most 2 are defective

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:

the radius is 2 times the diameter.

step-by-step explanation: