8.1 – 8.6 TEST Review
Name ____________________________
Be prepared for a part of the test to be “no calculator!”
Homework (and Required for Second Chance Learning)
1) Chapter Review: p. 524 – 526 (5–8, 13, 17–20, 24–35)
 Check odds in back of book
 Even Answers: 6) growth
8) growth
18) –3
24) check with graphing calc. 28) 5 log x – log 2 – 3 log y
2) Chapter Test: p. 527 (9–28, 31–32)
 Answers: 9) 6e 10) –2/e4x 11) e-2x + 6 12) 6 13) x
19) log (19) – 5 ≈ –3.721 20) 1/e2 21) 5 22) 0.617
26) log4 (1/27) 27) ln 2 + 2 ln y + ln x
28) 1.392
32) $5676.27
20) 0
30) log4 24
26) ln 7 + ln x – ln 3
32) 0.417
34) 148.41
14) –1
15) –3 16) 0 17) –2 18) 10
23) decay 24) y = 6x 25) 5.644; –1.322
31) V = 24,900(0.90)t; about 6.579 yrs
IMPORTANT NOTE: The above problems do NOT cover everything on the test!
Try some/all of the problems below to see a broader sample of the topics you need to know for your test!
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Optional Extra Review Problems:
Section 8.1: Exponential Growth: p. 470-472 (43, 45, 49, 51, 57–63 odd, 68, 69).
 Check odds in back of book.
EVEN Answers: 68) B
69) D
Section 8.2: Exponential Decay: p. 477-478 (10, 11–17 odd, 43 – 49 odd).
 Check odds in back of book.
EVEN Answers: 10a) 50 grams b) 8%
Section 8.3: The Number “e”: p. 483 (5–11 odd, 12, 49–59 odd).
 Check odds in back of book.
EVEN Answers: 12) y = -2
Sections 8.1 – 8.3 “Quiz”: p. 485 (2, 3, 4, 7–14). All answers are in back of book.
Section 8.4: Logs: p. 492 (82–91 odd  complete without using the log button on your calc!!).
 You MUST show work!! Answers: 83) C 85) B 87) B 89) 3/2 91) 9/2
Section 8.5: Properties of Logs: p. 496 – 497 (5–11 odd, 88, 89, 90)
 Check odds in back of book
 Answers that aren’t in the back: 88) C 89) E 90) B
Section 8.4 – 8.6 “Quiz”: p. 508 (1–6, 8–17). All answers in back of book.
Word Problems: p. 978 (1–3, 6–10). ** Note: Don’t graph #7 **
 Answers: 1) $2321.51
2) 3853 people
3) y = 15,000(0.89)t 6) Bank A: $3279.81;
Bank B: $2670.65
7) About 12 hours
8) pH = 7
9) 20 decibels
10)  5.4 yrs
Standardized Test Practice: p. 528 (1–10). Show work even though it’s multiple choice!
 Answers: 1) E 2) D
3) A 4) D 5) D 6) B 7) A
8) C 9) C 10) B
Mixed Practice: p. 950-951 (21–31 odd, 41, 43–55 odd, 65–85 odd)

#85’s answer is wrong since we know log5 25 and/or we know log5 125 and/or we can break up log5 10 to find
a log5 5 in it that we can simplify: the real final answer should be log5 (125/10) = log5 (25/2) = 2 – log5 2