Download Choice Assignment #3

Name: _____________________________ Date: _______________________
MCF3M: Choice Assignment #3
Please answer four out of the five questions listed. Please show all your work
and staple your solutions to the assignment sheet. These will be due Tuesday, March
20th, 2007. Have a great March Break!
1) If f(x) = -6x +4,
a) Find the domain if the range is -10 < f(x)
b) Find the range if the domain is 3 > x > -2
2) If g(x) = {(-2,3), (-1, 0), (0, 4), (2, 3)}
a) State the domain and range of g(x)
b) If h(x) = -2f(x + 1) – 3, find the domain and range of h(x)
3) Graph the function f(x) = 3x² - 4x - 5
4) Simplify the following and state restrictions
x2
2 x 2  5x  3
5 x 2  15 x  10
a) 2
b)
c)
x 4
2 x 2  5x  2
10 x 2  30 x  40
d)
x 2  2x
x3  4x 2  4x
5) The cost function of a production line is y  0.28x 2  0.7 x  1, where y is the cost per
hour, and x is the number of items produced per hour. Determine the most economical
production line.