I need help with math

Question

After graduating from college, Carlos receives two different job offers. Both pay a starting salary of $78000 per year, but one job promises a $4680 raise per year, while the other guarantees a 5% raise each year. 

Complete the tables below to determine what his salary will be after t years. 

Round your answers to the nearest dollar. 

t years 1 5 10 15 20

Salary with $4680 raise per year

t years 1 5 10 15 20

Salary with 5% raise per year

Answer 1

Here's how:

78000 + n(4680) = amount earned in n years

78000 + (1.05)^n = amount earned in n years