Ill give u brainliest pls

(05.01 lc)

the graph shows the distance, y, that a car traveled in x hours:

a graph is shown with x axis title as time in hours. the title on the y axis is distance traveled in miles. the values on the x axis are from 0 to 5 in increments of 1 for each grid line. the values on the y axis are from 0 to175 in increments of 35 for each grid line. a line is shown connecting ordered pairs 1, 35 and 2, 70 and 3, 105 and 4, 140. the title of the graph is rate of travel.

what is the rate of change for the relationship represented in the graph?

select one:
a. fraction 1 over 35
b. fraction 1 over 34
c. 34
d. 35

Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.