Question

Solve the equation.
Log(x+7)- logs=3

~3.5
~142.7
~0.0070
~0.0707

Answer 1

*-logx=3

Answer 2

log rules quotient rule\[\large\rm log_b x - \log_b y = \log_b \frac{ x }{ y}\]
change subtraction to division
product rule \[\large\rm log_b x + \log_b y = \log_b( x \times y )\]
addition ---to-> multiplication

power rule \[\large\rm log_b x^y = y \log_b x\]

Answer 3

Which one would I use?

Answer 4

look at the question which one would you use quotient rule or product ? (focus on sign)
and there is no exponent so you can't apply power rule