Olivia likes to knit hats and mittens for friends and family. Last fall, she knitted 4 hats and 5 pairs of mittens, which took a total of 78 hours. This fall, she knitted 5 hats and 5 pairs of mittens, which took a total of 85 hours. If each hat and each pair of mittens takes the same amount of time to knit, how long does it take Olivia to knit a hat and a pair of mittens?

597

step-by-step explanation:

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

the answer is b.

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.