Answer:
just multiply all the variables.
3 pants times 3 shirts= 9.
only 1 hat, so no variable there.
9 outfits
Your answer is 500, review the image I created to understand how I got my answer.
Let
x--------> the number of months
y-------> represents the balance, in dollars, of a bank account
we know that
y=-50x+100
the rate of change is equal to the slope of the line
so

therefore
<u>the answer is</u>
the rate of change is 
The x coordinate stays the same but y coordinate changes sign so it will be a reflection in the x-axis.