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

log(2x+2) = 45/20 = 2.25
assuming natural logs,
2x+2 = e^2.25
x = (e^2.25  2)/2
x = 3.7439