Use pictures or words to explain a strategy you would use to find 8+9

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?