Pls help ASAP! i got a question on my test that said, “if 12 hats for a birthday party cost $5.40, how much does it cost for 1 hat?” i found out the answer which was .45, but what i need help on is this:

Write a Ratio comparing the cost of each hat to the number of hats.

a 10 percent increase

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

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: