Math 121, Quiz 2, October 1, 2004
Name:
Instructions. Do all problems, and show all of your work. Calculators are not allowed.
1. (2 pts) A worker can build a fence in 11 hours. With the help of an assistant, the fence can
be built in 7 hours. How long would it take the assistant to build the fence alone?
2. (2 pts) Solve the equation 3x−6 = 2x2by the method of your choice.
3. (2 pts) Solve the inequality |3−4x|>17. Write your answer in interval form.
4. (2 pts) The distance of a motorcycle jump varies directly as the square of its velocity.
(a) Write the relation for this.
(b) If the velocity of the motorcycle is tripled, how does the distance change?
