Please try to solve all questions Solve the equation. 18) In Vx+7-3 B) C) le6 +
ID: 3116516 • Letter: P
Question
Please try to solve all questions
Solve the equation. 18) In Vx+7-3 B) C) le6 + 7) 2 SHORT ANS WER. Write the word or phrase that best completes each statement or answers the question. Solve the problem. e formula D - 6e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's rs aftrth rug has been given. When the number of milligrams reaches 2, the drug is to be MULTIPLE CHOICE. Choose the one alternative that bes t completes the statement or answers the question. Use the properties of logarithms to find the exact value of the expression. Do not use a calculator 20) log16 32-log162 A) 2 B) 16 C) 1 D) 32 Write as the sum and/or difference of logarithms. Express powers as factors. 21) l085 19 A) logs 19-log, B) log logs 19 log 8logs D) log 8los,s 19 B) 10g5 8÷ log 5 19 C) log5 8+ log5 8 D) log5 8 -log5 19 Express as a single logarithm 22) In X-7x-18x2 x25x-14In (x2-18x +81), x>0 x +1 A) In 2(x -7)x + 1) B) In 9x+1) 3(x-9)(x + 1 2(x-7) C) In (x -7)2 (x-72(x+1) Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to three decimal place 23) log, 0.485 A)-1.518 3 B) 6.186 C)-0.659 D)-0.314 olve the equation. 24) log (x + 4)- log (4x+ 1) B) C-1) D) Ive the problem. 25) f(x)-4x + 3 and g(x) = 4-x + 5 . Find the point of intersection of the graphs of f and g by solving f(x)- g(x). B) (256, 1) C) (1, 256)Explanation / Answer
18)
ln sqrt(x+7) = 3
take exponent on both sides
e^(ln sqrt(x+7)) = e^3
sqrt(x+7) = e^3
x+7 = (e^3)^2
x+7 = e^6
x = e^6 - 7
Answer: A
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