Answer:
final equation: 55,000 + 3,700n = 63,000 + 2,900n
Step-by-step explanation:
Blanca's current salary: 55,000
With an annual increase of $3,700, her salary after n years is 55,000 + 3,700n
Isabel's current salary: 63,000
With an annual increase of $2,900, her salary after n years is 63,000 + 2,900n
Setting the two salary equations equal gives:
55,000 + 3,700n = 63,000 + 2,900n