Solve the problem.Suppose that f(x) = -x - 4 and g(x) = x - 15.(a) Solve f(x) > 0.(b) Solve g(x) > 0.(c) Solve f(x) ? g(x).
A. (a) x < -4; (b) x < 15; (c) x ? -9.5
B. (a) x > 4; (b) x > 15; (c) x > 5.5
C. (a) x < -4; (b) x > 15; (c) x ? 5.5
D. (a) x < -4; (b) x < -15; (c) x ? 5.5
Answer: C
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Solve the problem.
=
A. 
B. 500
C. 
D. 501
E. 
Factor.3x2 - 3x - 18
A. 3x2 - 3x - 18 B. 3(x + 2)(x - 3) C. (3x + 6)(x - 3) D. 3(x - 2)(x + 3)
Perform the indicated operation. Write the answer without exponents.(4 × 10-2) × (8 × 102) × (6 × 102)
A. 192 × 10-8 B. 19,200 C. 192 × 102 D. 1920
Solve the problem.If a single pane of glass obliterates 15% of the light passing through it, then the percent P of light that passes through n successive panes can be approximated by the equation P = 100e-0.15nHow many panes are necessary to block at least 50% of the light?
Fill in the blank(s) with the appropriate word(s).