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

a. {1,2,3}
b. 0
c. {1,2,3,4,5,6,7,8}

C

Step-by-step explanation:

If A= {1,2,3} and B= {1,2,3,4,5,6,7,8} then (A U B) is the content of both A and B with repetition

(AUB) = {1,2,3,4,5,6,7,8}

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce