Original price of the laptop = P = $600
Rate of depreciation = r = 10% = 0.10
Time in years = t = 2
We have to find the worth of the laptop after 2 years. The given formula is:

Using the given values, we get:

Thus, the laptop will worth $486 in two years
Subtract 87 by 63 and there is UR answer
The answer to this is the top left answer choice.
Equation: 4x+15=31
I have included a picture of my work since explaining might be difficult but the way I solved this if the beginning of algebra and I hope it makes sense.
Your welcome, Katy
An equation is a math problem that must be solved to find out to find out a difference, quotient, sum, or product.
An inequality is a math problem that must be solved to find out what the difference is between two numbers.