Atrain is traveling up slight grade with an angle of inclination of only 2 degrees. after traveling 1 mile, what is the vertical change in feet?

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Me because some of question i don’t understand

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days