In 1913, the population of a city was 130,000. Since then, the population has increased by exactly
2.5% per year. If the population continues to grow at this rate, what will the population be in 2025?
Write the equation.

494000

Step-by-step explanation:

2.5 percent of 130000 is 3250, so 3250 x number of years. There are 112 years in between. So 112 x 3250=364000. 364000 + 130000=494000.

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15