Given the word problem, we can deduce the following information:
1. Myrna budgets 22% of her annual income for housing.
2. She budgets $400 per month for housing.
To determine Myrna's annual income, we find her annual budget for housing first as shown below:
Annual Budget for Housing = $400 per month( 12 months) = $4,800
Since Myrna budgets 22% of her annual income for housing, our equation for her annual income would be:
![4800=.22x](https://img.qammunity.org/2023/formulas/mathematics/college/rfagai87k9wpd53algphps7cnw2fvifynt.png)
So,
![\begin{gathered} 4800=.22x \\ \text{Simplify and rearrange} \\ (4800)/(.22)=x \\ x=21,818.18 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/aba5a5qckdgp0553cbzwl41pp2j786utqk.png)
Therefore, the answer is:
d. $21,818