State whether the pair of ratios form a proportion. dont guess fr + 23 POINTS 17/12 and 10/7

a. yes
b. no
c. cannot be determined

No

Cross multiply:

17 * 7 = 12 * 10

Simplifying

17 * 7 = 12 * 10

Multiply 17 * 7

119 = 12 * 10  

Multiply 12 * 10

119 = 120

Solving

119 = 120

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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.