math_1315_spr08_test_3

# math_1315_spr08_test_3 - 3-1 2 log a(2 x 3(b 21 log 3 3 x...

This preview shows pages 1–4. Sign up to view the full content.

1 2 3 4 5 6 7 Total MATH 1315 Exam 3 Instructor: C. Gunning Name: 1. 15 points Solve the following equations: (a) 9 2 x = 27 (b) 4 x 2 = 2 x (c) ( e 4 ) x · e x 2 = e 12 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2. 10 points Graph the following equations by hand. Show all work (including explaining transformations) and label asymptotes and at least one point on graph. (a) f ( x ) = - 2 x + 1. (b) g ( x ) = - 2 + 3 - x 3. 15 points Evaluate the following by hand (show work!). (a) ln e 2 (b) log 6 18 - log 6 3 (c) log 6 9 + log 6 4 2
4. 10 points Write each expression as a sum/diﬀerence of logarithms. Express powers as factors. (a) log 2 ± x 3 x - 3 ² (b) log a ( u 2 v 3 ) 5. 10 points Write each expression as a single logarithm. (a) 2 log a (5 x

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 3 )-1 2 log a (2 x + 3) (b) 21 log 3 3 x + log 3 (9 x 2 )-log 3 (9 x ) 3 6. 20 points Solve the following. (a) 3 x = 14 (b) 3 log 2 ( x-1) + log 2 4 = 5 (c) log a x + log a ( x-2) = log a ( x + 4) 7. 20 points The formula D = 5 e-. 4 h can be used to nd the number of milligrams D of a certain drug that is in a patients bloodstream h hours after the drug has been administered. When the number of milligrams reaches 2, the drug is to be administered again. What is the time between injections? 4...
View Full Document

## This note was uploaded on 07/30/2008 for the course MATH 1315 taught by Professor Gunning during the Summer '08 term at Central New Mexico Community College.

### Page1 / 4

math_1315_spr08_test_3 - 3-1 2 log a(2 x 3(b 21 log 3 3 x...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online