Evaluating Functions

Given f(x) = 5x + 3, what is the value of f(2)?

Given g(x) = 3(1 − x), what is the value of g(−2)?

w(t) = -2t+ 1 ; Find w(-7)

The manager of a grocery store determined that the number of bananas remaining on the shelves at her store can be determined by the function

b(n) = 150 − 6n, where n is the number of hours since the store opened. How many bananas are left on the shelves after the store has been open for 6 hours?

A train conductor determined the distance in miles a high speed train was from its destination using d(h) = 1375 − 110h where h is the number of hours traveled. How far is the train from its destination after 8 hours?