Kelly and Tracy wanna know which of their dogs runs faster. The graph represents the constant speed of Kelly’s dog, and the equation represents the constant speed of Tracy’s dog, both in meters per second. Which dog has greater constant speed (unit rate)?

a) 7x=7

step-by-step explanation:

47 - 90 = 43

43 - 180 = x

x = 137

7/2

(decimal: 3.5)

welcome ; )

step-by-step explanation:

55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.