solve for C:
Multiply both sides by 9/5:
[tex]\frac{9}{5}C=F-32[/tex]Add 32 to both sides:
[tex]F=\frac{9}{5}C+32[/tex]---------------------------------------------------------
for C = 30:
[tex]\begin{gathered} F=\frac{9}{5}(30)+32 \\ F=54+32 \\ F=86 \end{gathered}[/tex]Answers:
a)
[tex]F=\frac{9}{5}C+32[/tex]b)
[tex]F=86[/tex]