Express your answer as both an exact expression and a decima
Express your answer as both an exact expression and a decimal approximation rounded to two decimal places. e=2.71828182845905
e3x-7=803x+9
Solution
e3x-7=803x+9
Take natural log on both sides:
ln(e3x-7) = (3x -9)ln80
3x -7 = (3x-9)ln80
3x(1 -ln80) = 7 -9ln80
x = ( 7 -9ln80)/( 1- ln80)
= -32.438/-3.382026
= 9.59129
x = 9.59
