Convert 30°to radians. Leave answer as a reduced fraction in terms of π.

a: pi/3
b: pi/6
c: pi/4
d:pi/2

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis

What is the distance between the points (2, 5) and (5,9)?