It is the division property because x or 1x is dividing the 10
What you have to do is multiply 21 by 2. it is 42. $42 dollars was the original price of the bookcase.
Whats the question? or any specific information
Answer:
initial value = 2 (the y-intercept), rate of change (also referred to as slope) = 1
Step-by-step explanation: