A car who’s original value was $25600 decreases in value by $90 per month. How Long will it take bef

A car who’s original value was $25600 decreases in value by $90 per month. How Long will it take before the cars value falls below $15000

Let m be the number of months.We have our Book Value B(m) given by:
B(m) = 25600 - 90m

We want to know when the Book value is less than 15,000. So we have an inequality:
25600 - 90m < 15000

Typing this inequality into our search engine and solving for m, we get:
m > 117.78 or m 118 months