Answer:
The required equation is .
Step-by-step explanation:
Consider the provided information.
The Initial value of poster = $ 18
After 1 year amount of increase = $ 20.70
With the rate of 15% = 0.15
Let future value is y and the number of years be x.
Now verify this by substituting x=1 in above equation.
Which is true.
Hence, the required equation is .
In order to solve this inequality, we should divide both sides by 9:-
Why 9? Because x is multiplied by 9, and we need to isolate x in order to find its value.
Hence, that's the solution to the inequality.
<em>It also means that the numbers less than 8 will satisfy the given inequality (make the inequality true)</em>
(Option C is correct :) )
<h3>note:-</h3>Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I will comment and/or edit my answer :)