Efectuați calculele și scrieți rezultatul în forma cea mai simplă: a) (–2 + 1) + 3( –2); b) (2 + 3)( – 1) + (3 – 2)(– + 5); c) (–5 + 2)(3 – 1) + (15 + 7)( – 3); d) ( – 1)(–5 + 3) + 5( – 1); e) ( + 2)(2 – 2 + 4) – 3 + 8; f) (2 –1)(42 + 2 + 1) + 1 – 83.

step-by-step explanation:

hunhgunyt7 in u uuuhiuteu

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.