1.
[tex]t=[/tex] total
[tex]t=5+6(1)+9[/tex]
[tex]t=20[/tex]
$20 total
[tex]p=[/tex] sales tax from purchase
[tex]s=[/tex] sales tax percentage
[tex]ts=p\\20s=2 \\ s= \frac{2}{20} \\ s=.1[/tex]
[tex].1(100)=10[/tex]
10% sales tax
2.
[tex]t=[/tex] total
[tex]t=6+2(3.5)+2(3.5)[/tex]
[tex]t=6+7+7[/tex]
[tex]t=20[/tex]
$20 total
[tex]p=[/tex] sales tax from purchase
[tex]s=[/tex] sales tax percentage
[tex]ts=p \\20s=1\\ s= \frac{1}{20} \\ s=.05[/tex]
[tex].05(100)=5[/tex]
5% sales tax