Which of the following sets is closed under multiplication? a. {0, 1} b. {1, 2} c. {0, 1, 2} d. none of the sets are closed under multiplication.

B. {1,2}  because they are both whole numbers 0 is not one.

(Proof: Whole Numbers: This set is closed only under addition and multiplication. Integers: This set is closed only under addition, subtraction, and multiplication. Rational Numbers: This set is closed under addition, subtraction, multiplication, and division (with the exception of division by 0)"

(o,1)

Step-by-step explanation:

i got my results back and it said that this was the correct answer

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !