precalc/trig
posted by Alexander .
Solve the Logarithmic equation algebraically. Give an Exact Answer and an approximation for x to four decimal places.
20 log(2x+2)=45

precalc/trig 
Steve
log(2x+2) = 45/20 = 2.25
assuming natural logs,
2x+2 = e^2.25
x = (e^2.25  2)/2
x = 3.7439
Respond to this Question
Similar Questions

Logs.
Can you please help me with the following log. problems? 
algebra homework
please check my answers. Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer. ln sqrt x+6 = 9 i got {e^96} log (x + 4) = log (5x  5) … 
Algebra
1)If y varies inversely as x and y = 3, when x = 6. Find y when x = 36. A)72 B)2 C)1/2 D)18 I chose C y1/x2 = y2/x1 3/36 = y2/6 18/36 = 1/2 2)Write the equation 4^3 = 1/64 in logarithmic form. A)log64 = 4^3 B)log^3 64 = 4 C)log^4 … 
calculus
Please help me solve this equation. log[2](3)+log[2](x)=log[2](5)+log[2](x2) 1. Solve equation by setting up algebraically. 2. Use appropriate properties of Logarithm to reduce the number of logarithmic terms to only one. 3. Solve … 
Trig/PreCalc
Need help with current Trig problem for tomorrow: Solve the logarithmic equation algebraically. Approximate the result to three decimal places. 6log3(0.5x)=11 I know to start off the equation you divide by 6. I know the answer is 14.988. … 
Trig/PreCalc
Could someone please help me on this problem. I'm really confused, and this assignment is due tomorrow. Solve the logarithmic equation algebraically. Approximate the result to three decimal places. log4xlog4(x1)=1/2 To start off … 
precalculus
solve the following logarithmic equation. be sure to reject any value of x that is not in the domain of the original logarithmic expression. give the exact answer. then, use the calculator to obtain a decimal appromiation, correct … 
college algebra
write the expression as a single logarithm 1. In(x/x*2)+In(x+2/x)In(x^24) solve the following logarithmic equation. 2. log_9(x2)+log_9(x+1)=2 what is the exact solution? 
Math
Do the following. (a) Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of ln(x) in your answer.) log 8.6 (114) =_____ (b) Give a calculator approximation (correct to four decimal places). … 
Math
Find the exact solution, using common logarithms, and a twodecimalplace approximation of each solution. log(7x + 4) = 2 + log(2x − 3) Solve the equation. log(x^3) = (log x)^2