Brown rice costs $2 per pound and beans cost $1.60 per pound. Lin has $10 to spend on these items to make a large meal of beans and rice for a potluck dinner. Let b be the number of pounds of beans Lin buys and r be the number of pounds of rice she buys when she spends all her money on this meal.
-Write and equation relating the two variables.
-Rearrange the equation so b is the independent variable.
-Rearrange the equation so r is the independent variable.
