A town has a population of 4000 and grows at 3.5% every year. To the nearest year, how long will it be until the population will reach 7500?

The correct answer is 25 years.

Step-by-step explanation: If the population increases by 3.5 %, and the population to start off with is 4,000, this means the population will increase by 140 people every year. (4,000 x 0.035= 140) 140 x 25= 3,500 thus 4,000+ 3500= 7500... 25 years

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.