If a = {1, 2, 3} and b = {1, 2, 3, 4, 5, 6, 7, 8} then a ∪ b

i do not know this sorry : (

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.