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

1.  

2.  

3.  

Step-by-step explanation:

1. According to the information exercise given in the exercise, the cost per pounds of brown rice is $2. Since "r" represents the number of pounds of rice Lin buys, the total cost of the brown rice she buys can be represented with this expression:

The beans cost $1.60 per pound. Since "b" represents the number of pounds of beans Lin buys, the total cost of beans she buys can be represented as:

Knowing that she spends $10, you can write the following equation:

2. In order to rearrange the equation so "b" is the independent variable, you need to solve for "r":

3. To rearrange the equation so "r" is the independent variable, you must solve for "b". You get:

Step-by-step explanation:

lin spend 1 pound on rice and the rest on beans

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225