Precalculus question worth 20 points

i don't get this question, if anyone could that'd be great!

santa's wonderland is an extravagant holiday light display that is open from early november through january each year. the entry fee is $15 per vehicle for up to and including 5 people, with an additional $1.50 for each person over 5. express this information as a piecewise function of x, where x represents the number of people in the vehicle.

no pictures of the graph

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.