Question

I need help! Please !

Answer 1

\[-3(5^{x})=-51\]\[5^{x}=17\]\[\log_{10} 5^{x}=\log_{10} 17\]\[x \log_{10}5=\log_{10}17 \]\[x=\frac{ \log_{10}17 }{ \log_{10}5 }\]\[x \approx1.76\]