Answer:
X is a variable or a symbol for a number we don't know yet. The variable can be plugged in with any number (a fraction, decimal, etc,). For X, the answer would be 5.
Im choosing A and yes that would be great
Step-by-step explanation:
Mark would be 9
12÷2?
I guess I dunno :/ lel
see below
h(x) = 2x-10
Let x=3
h(3) = 2*3 -10
= 6-10
=4
Let x=-3
h(-3) = 2*-3 -10
= -6-10
=-16