This work isnt too much or too long, but would really appreciate it when doing it if you do it in a way that shows how you think in other words dont just write down the answer!
Tests
WHAT IS A FUNCTION?
1. f (x) = 3x + 2
a) Calculate f (2)
b) Calculate f (-1)
c) Solve the equation f (x) = 4
2. f (x) = 2x – 1
a) Calculate f (0)
b) Solve the equation f (x) = 0
3. V (x) = 200x – 8000, where V (x) is the profit of sec/money/dollar for x tickets sold.
a) Calculate the V (200)
b) Solve the equation V (x) = 200
c) Explain in words the difference between V (200) and V (x) = 200
d) Enter the dependent and independent variable.
4. The cost of renting a bike is 50 bucks in base-pay plus 10 bucks per hour.
a) Make a table that shows the cost of 2, 4 and 6 hours.
b) Specify a function that describes the cost/dollar y as a function of time x hours.
c) Draw with the help of the table a graph of the function.
d) Describe the graph in words.
e) Which variable is the dependent and which is independent?