PLEAS ANSWEE Sally and Joan were able to dust the house in 3 hours together. It takes

Joan 10 hours to finish the same job alone. Without help, how long

would it take Sally to finish the same job ?

14hrs

Step-by-step explanation:joan=10hrs

                                           joan+sally=3hrs

representing joan and sally's time taken in fractions 1/10+=1/3

1/3-1/10=7/30

7/30 by 60min(in an hour)

=14hrs

-6 is the correct option from the above given options

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.