Explanation:
To show that the equation r = 9 - 0.48c is an equivalent equation, we need to demonstrate that both equations produce the same solutions. Let's start by rearranging the given equation to match the standard form of a linear equation:
r = 9 - 0.48c
Now, let's simplify the equation by distributing the -0.48 to the terms inside the parentheses:
r = 9 - (0.48c)
Next, let's combine like terms:
r = 9 - 0.48c
We can see that the equation has been rearranged to match the original equation r = 9 - 0.48c, demonstrating that both equations are indeed equivalent.