Answer:
$46.2
Step-by-step explanation:
[tex]p\%=\dfrac{p}{100}\\\\10\%=\dfrac{10}{100}=\dfrac{1}{10}=0.1\\\\10\%\ of\ \$42\to0.1\cdot\$42=\$4.2\\\\\$42+\$4.2=\$46.20[/tex]
Other method:
[tex]\text{Increase bo}\ 10\%\to100\%+10\%=110\%\\\\110\%=\dfrac{110}{100}=\dfrac{11}{10}=1\dfrac{1}{10}=1.1\\\\110\%\ of\ \$42\to1.1\cdot\$42=\$46.2[/tex]
