Question

Find the value of x:

i) 5^x = 424
ii) 1 - 3^x = 0.57
iii) 6e^2x+1 = 192

Need help, do I use log? Don't remember how to proceed...

Answer 1

take the log to base 5 on both sides

Answer 2

\[5^x = 424\]\[\log_5(5^x)=\log_5(424)\]\[\qquad\dots=\cdots\]