If a and b are two rational numbers which expressions are equivalent to a -b? mark all that apply.

If the measure of xyz is 81 what is the measure of yz

If f(x) = 4x – 3 and g(x) = 8x + 2, find each function value a. f[g(3)] b. g[f(5)] c. g{f[g(-4)]}

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?