CHAPTER 3 PRACTICE TEST

As a study aid, we have included complete solutions for each Practice Test problem at the back of this book.

Given $f (x) = \frac{8}{x} - 2 x^{2},$ find (a) $f (- 4)$ and (b) $f (x - 4) .$
A rocket has a mass of 2000 Mg at liftoff. If the first-stage engines burn fuel at the rate of 10 Mg/s, find the mass m of the rocket as a function of the time t (in s) while the first-stage engines operate. Sketch the graph for $t = 0 s$ to $t = 60 s .$
Plot the graph of the function $f (x) = 4 - 2 x .$
Use a graphing calculator to solve the equation $2 x^{2} - 3 = 3 x$ to the nearest 0.1.
Plot the graph of the function $y = \sqrt{4 + 2 x} .$
Locate all points (x, y) for which $x < 0$ and $y = 0.$
Find the domain and the range of the function $f (x) = \sqrt{6 - x} .$
If the function

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Basic Technical Mathematics, 11th Edition by Allyn J. Washington, Richard Evans