Final answer:
Jessica's annual salary is calculated by dividing her housing budget of $1400 by 28% to find her monthly income, then multiplying by 12 to get her annual salary, which is $60,000.
Step-by-step explanation:
Jessica's financial advisor suggests she should not spend more than 28% of her gross monthly income on housing. Given that her monthly housing budget is $1400, we can calculate her gross monthly income by dividing $1400 by 28% (0.28). This calculation shows that her gross monthly income is $5000 ($1400 / 0.28). To find her annual salary, we multiply her monthly income by 12, since there are 12 months in a year. Therefore, Jessica's annual salary is $60,000 ($5000 x 12).