For integers x, y, define x ⊕ y = x ⋅ y + 1; read "x plus y" where x ⋅ y is defined normally.
a. is this form of addition commutative? explain why or why not.
b. is this form of addition associative? explain why or why not.

Which graph represents the function g(x) = |x + 4| + 2?

What is the least common multiple for 6 and 8? what is the least common multiple for 4 and 12 ? what is the least common multiple for 11 and 12? what is the least common multiple for 3 and 6?

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?