Answer:
c) $22 trillion.
Explanation:
We have been given that disposable income is $20 trillion, taxes are $6 trillion, and transfers are $4 trillion. We are asked to find income in trillions.
![\text{Disposable income}=\text{Income}+\text{Transfers}-\text{Taxes}](https://img.qammunity.org/2020/formulas/mathematics/high-school/klkrl0j5ng75i4z2avvnfqos67s73sxsxl.png)
, where each amount is in trillions.
![\$20=\text{Income}-\$2](https://img.qammunity.org/2020/formulas/mathematics/high-school/x8bdsdegl3facbb9sv7yj2szul85b7fb1l.png)
![\$20+\$2=\text{Income}-\$2+\$2](https://img.qammunity.org/2020/formulas/mathematics/high-school/awik14bvtya8l52yo9zrb8kmxnowmfyhnh.png)
![\$22=\text{Income}](https://img.qammunity.org/2020/formulas/mathematics/high-school/7qbsyfxrrlqzqqq714zw14y0zndwvgkp53.png)
Therefore, the income is $22 trillion.