The graph shows the distance, y in miles, of a moving train from a station for a certain period of time, x, in hours: (below)

what is the speed (in miles per hour) of the train?
100 miles per hour
50 miles per hour
150 miles per hour
400 miles per hour

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

15/16 as a decimal rounded to the nearest hundredth

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.