Test 4 Mat 1101 Worksheet - 2011 (Page 2 of 2) in pdf

Test 4 Mat 1101 Worksheet - 2011 Page 2

9. Graph the following function: f(x) = 3x

– 6x – 3

10. Solve for x, if possible: 4x(x + 5) = 9

11. Graph the following function: f(x) = –2(x + 3)

+ 4

12. A bottle rocket is launched vertically upward with a velocity of 120 feet per second from a back porch deck

that is 10 feet off of the ground. Use the formula h(t) = –16t

+ v

t + h

to answer the following questions.

a) Find the equation h(t) that represents the height of the ball after t seconds.

b) How high is the rocket after 3 seconds?

c) How long does it take for the rocket to hit the ground?

d) How long does it take the rocket to reach

e) What is the highest distance above the

its highest distance above the ground?

ground that the rocket reaches?

13. Bill owns a watch repair shop and has found that the daily cost of operating his shop is given by the function

C(x) = 2x

– 136x + 51, where x is the number of watches repaired each day.

a) How many watches must he repair each day

b) What would be the costs for operating his shop

in order to minimize his costs for the day?

if he repairs 30 watches on a given day?

Test 4 Mat 1101 Worksheet - 2011 Page 2