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Chapter4 quiz1
1) Evaluate when t = 15: 300e -.076t
(a) 95.95 (b) 39.31 (c) 0.000479718
(d) -1906.12 (e) None of these
2)
Match the graph above with the correct function. (a) f(x) = (1/2)x - 1 (b) f(x) = 3x - 1 (c) f(x) = 3x+1 (d) f(x) = 4 x (e) None of these 3) Match the exponential function with the correct graph above: y = 2 + ex. (a) (b) (c) (d) (e)
4) The range of f(x) = 3 - ex is (a) (3, ìnf) (b) [0, ìnf) (c) (-ìnf, ìnf)
(d) (-ìnf, 3) (e) None of these
(a) $1624.67 (b) $2237.74 (c) $2228.92 (d) $2226.04 (e) None of these
(a) 400 (b) 4091 (c) 27,487 (d) 23,716 (e) None of these
(a) 4 log 3 = 64 (b) log4 64 = 3 (c) log3 4 = 64
(d) log3 64 = 4 (e) None of these
(a) 713 = b (b) b13 = 7 (c) d7 = 13
(d) 7b = 13 (e) None of these
(a) x = 2 (b) x = 0 (c) y = 2 (d) x = -2 (e) None of these
f(t) = 85 - 16 log10(t + 1) 0 < t < 12
where t is the time in months.
10) What is the average score after 5 months?
(a) 73 (b) 74 (c) 59 (d) 56 (e) None of these
11) For the above example, what was the average score at time zero, when the test was originally taken?
(a) 69 (b) 71 (c) 85 (d) 160
(a) 0.2430 (b) 0.5596 (c) 0.7124 (d) 1.4037 (e) None of these
(a) -2 + 2 log2 x (b) log2(x2 - 4) (c) 2log2 x
(d) log2 2x (e) None of these
(a) ln 2x + ln 3y (b) 6xy (c)ln(2x +3y) (d)2x + 3y
(a) 4log x - 3 log y (b) 4log x + 3log y (c) log(yx)12 (d) log x4*log y3
© 1997, 1998 1999 Joan Bookbinder