Question

5 * e^(1-2x)=20

Answer 1

divide by 5 in both side

Answer 2

change the remaining equation into ln format

Answer 3

ln 4=1-2x

Answer 4

divide both sides by 5
e^(1-2x)=4, write each with a natural log
ln e^(1-2x)=ln 4

Answer 5

so the answer should be -1.93

Answer 6

not sure don't have a calculator but
1-2x = ln 4
-2x = -1 + ln 4
divide both sides by -2 and the calculator will give you the answer