Total cost ($) = Price ($/pound) +
Amount (pounds)

Walnuts $\displaystyle{x}+{5}\usepackage{cmbright}\Huge\$ = 5.00 +
$\displaystyle{x}\usepackage{cmbright}\Huge\$

Cashews 18
= 12.00 +
6

Total Mix $\displaystyle{8}+{\left({x}+{6}\right)}\usepackage{cmbright}\Huge\$ = 8.00 +
$\displaystyle{x}+{6}\usepackage{cmbright}\Huge\$

	Total cost ($)	=	Price ($/pound)	+	Amount (pounds)
Walnuts	$\displaystyle{x}+{5}\usepackage{cmbright}\Huge\$	=	5.00	+	$\displaystyle{x}\usepackage{cmbright}\Huge\$
Cashews	18	=	12.00	+	6
Total Mix	$\displaystyle{8}+{\left({x}+{6}\right)}\usepackage{cmbright}\Huge\$	=	8.00	+	$\displaystyle{x}+{6}\usepackage{cmbright}\Huge\$