The quadratic function f (x) = - 45x2 + 350x + 1,590 models the population of a city where x represents the number of years since 2005 and f (x) is the population of the city in thousands of people. What is the estimated population of the city in 2010?

2,215,000

Step-by-step explanation:

Given: The quadratic function models the population of a city where x represents the number of years since 2005.

To Find:  population of the city in 2010

We need to put x= 2010-2005 = 5

Hence, the estimated population of the city in 201 = 2215 thousands or 2,215,000 .

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50