If the relationship could be proportional, what would the constant of proportionality be? How loud a sound is depending on how far away you are.

distance to sound

listener (ft) level (dB)

5

85

10

79

20

73

40

67

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

6 cm

step-by-step explanation:

i agree because i see the other persons thinking is clear