If f (x) = 2x^2 + 3 and g(x) = x^2 - 7 find (f + g)(x)

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

What is the value of x in the equation 2(x-4) = 4(2x + 1)?