How many pounds of walnuts that cost $6.50 per pound must be mixed with 7 pounds of cashews that cost $11 per pound to make a mixture of nuts that costs $8.60 per pound?

Use the following partially-completed table to help:

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

Walnuts
= 6.50
* $\displaystyle{x}\usepackage{cmbright}\Huge\$

Cashews
= 11.00 * 7

Total Mix
= 8.60 * $\displaystyle{x}+{7}\usepackage{cmbright}\Huge\$

	Total cost ($)	=	Price ($/pound)	*	Amount (pounds)
Walnuts		=	6.50	*	$\displaystyle{x}\usepackage{cmbright}\Huge\$
Cashews		=	11.00	*	7
Total Mix		=	8.60	*	$\displaystyle{x}+{7}\usepackage{cmbright}\Huge\$