Plz answer correctly give exact numbers and 448,740 isn't the correct answer

answer: 12

step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !