Which sets of numbers are closed under addition?

choose all answers that are correct.

a.
{0, 2, 5, 8}

b.
even integers

c.
rational numbers

d.
{0}
plzz ?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Glenda makes an online purchase for picture frames for $12.95 each and formats of $5.89 each the site says it taxes paid by the customer or 6.5% of the total purchase price shipping charges are based on the