Answer: 49 Miles
Step-by-step explanation:
You would add the original 15 miles to the 34 to get 49 in total.
49 Miles is how much you've walked.
First off, what's the slope of "r" anyway,

.
low and behold, since "r" is in slope-intercept form, notice, it has a slope of -1/2.
now, any line perpendicular to "r", will have a
negative reciprocal slope to it, that is,

so we're really looking for a line whose slope is 2, and runs through 4,-3,
.05
You just move the decimal place back, twice.
No it does not it does not always have to be it will mess up your answer so no