Supoose that the funtion f is defined for all real numbers as follow

f(-5): 3

f(-2): -1 1/2

f(-1): 2

Step-by-step explanation:

f(-5):

3

f(-2):

-1/4*(-2) - 2 = -1 1/2

f(-1):

-((-1) + 1)^2 + 2 = 2

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870