If f(x) = x, find the simplified form for the following inputs: b) f(x) + 2

c) 1/2f(x)

d) 2( f (x) ) +3

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.

Write the point-slope form of an equation of the line through the points (-2, -3) and (-7, 4).

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.