4. Solve the equation: 3x2-4x +4 0 5. Solve the equation: 5x+4x 2x2+12 6. Solve

Question

4. Solve the equation: 3x2-4x +4 0 5. Solve the equation: 5x+4x 2x2+12 6. Solve the equation x+ 6x+ 5 0 using the quadratic formula. 7. Solve the equation: 4x2+9-0 8. Solve the equation x2+6x+5 0 either by factoring or completing the square 9. Find the solutions of x +3x -5. Round your answers to the nearest hundredth. Sections: 8.1, 8.3, 8.4, 8.5, 8.6 1. Evaluate without a calculator: loga128 2. Evaluate without a calculator: log.32 3. Evaluate without a calculator: logs32 4. Evaluate without a calculator: log,(1/32) 5. Evaluate without a calculator: In es 6. Find x without a calculator: logsx - -2/3 7. Find x without a calculator: x = logr(1 /49) Find x without a calculator: x = logo(3) 9. Solve the following equation log 643 10. The formula for compound interest is given by A = P(1 + r/n)". If the principal is $538 and the rate of interest is 3.8% per year, compounded quarterly, what is the amount after 15 years? 11. The formula for radioactive decay is given by the formula P-Poekr, where Po is the initial amount, P is the final amount, t is the time and k is a constant that depends on the radioactive substance. If there is initially 400 grams of a substance and k is 0.035, how much of the substance is left after 20 years? Round your answer to the nearest hundredth of a gram 12.Solve the equation 3* 16. Round your answer to the nearest hundredth. 13. Solve the equation logs(x+1)+ logs(x+3) logs15 14. If f(x)-x+3 find f(-1), f(O), f(1), and f(2). log, 15. IflogA=5, log,B-2, and log,C-3, evaluate Sections: 9.1, 9.2, 9.3, 9.4, 1. If the radius of a circle is 7and the center is at (-2,5), find the equation oft circle.

Explanation / Answer

Solution1:

log4128

=log4 44

since 128 can be written as 4^4

=4log44

=4*1

=4

ANSWER:4

Solution2:

log232

=log22^5

=5 log22

=5*1

=5

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