Please help! I will give you the brainiest and a lot of points!

a) i

b) i

c) yes

Step-by-step explanation:

∩ means that it must exist for both

for eg A ∩ B , it contains all elements of set a that also belongs to set b

∪ means it combines the two sets

eg A ∪ B contains all elements of both set A and B

' means everything excluding the elements of that set

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:

i dont know

step-by-step explanation:

umm. i dont know