Answer:
every difference x-y is the same for related pairs of x and y
<span>Because there are 20 coins plus four bars = 24 items to choose. You want to choose where to put the four bars, thus C(24,4). There are four bars, not five. Note that four bars divide the 20 coins into five sections. Five bars would divide it into six, but we only have five different kinds of coins to choose from.</span>
Answer:
Ok.
Step-by-step explanation:
What is your question?
If you add a constant to the original equation, you are actually shifting up or down
Since the constant is positive, you are shifting the graph 20 units up