Stacie is choosing between two careers. Working for company A, Stacie will make $45,000 the first year and will receive an addit
ional $1,500 per year for each year worked. Working for company B, Stacie will make $42,000 the first year, and she will receive an additional $1,800 per year for each year worked. The expressions representing each company’s total pay over 30 years are shown below. How much more will company B pay over 30 years?
$12,000
$40,500
$49,200
$49,500
The expression in company B represents that is is in arithmetic progression where first term is 42000 and common difference is 1800 . So we have to use the formula of sum of n terms which is
Where a is the first term, n is the nth term, d is the common difference