When Lisa started at her current job, her employer gave her 2 days of paid
vacation time with a promise of 3 additional paid vacation days for each year
she remains with the company to a maximum of 4 workweeks of paid vacation
time. The equation y=3x+2 (where y represents numbers of vacation days and
x represents number of years) models this relationship.

a. It has been 5 years since Lisa began working for this employer. How many
paid vacation days has she earned?

b. When will she reach the maximum number of paid vacation days allowed?