Which set is closed under multiplication?

Select one:

a. {1, 3}

b. {0, 1, 3}

c. {1, 2, 3}

d. None of the sets are closed under multiplication.

When Marla rounded 19.95 to the nearest tenth she found the number change to 20.

What is the place value of 8 in 12,354.897

Initially, the ratio of Alex's toy cars to Pete's toy cars was 7:3. After Alex gave 20 toy cars to Pete, they had each an equal number of cars. How many toy cars did they have altogether?

What is (1⁄3) 2 equal too?

Solve 2 (3a² - 1) - 6a = 5a

An antique painting has a 40% chance of increasing in value by $10,000 and a 60% chance of decreasing in value by $5000. Based on this information, would you recommend investing in the painting? A.

What is [ (17 - 9) x (3 x 2) ] : 2? tell me your answer with the PBB or Parentheses, Brackets, Braces () [] {}

Rachel took out a personal loan for $4,500 with a monthly payment of $173.06 for 36 months. Determine the finance charge on Rachel's loan if she takes all 36 months to pay it off.

How do I solve y = a + 151

Sanah and Madiyah share some money in the ratio 4:3. Sanah gets £60. How much does Madiyah get?