Question

a company offers a starting yearly salary of $38,000 with raises of$3,500 per year. fin the tota slary over a ten year period

Answer 1

arithmetic series with a1=38000; d=3500; n=10
use formula (variation of Gauss formula):\[s=\frac{n}{2}(2a _{1}+(n-1)d)\]\[s=\frac{10}{2}(2*38000+(10-1)*3500)=537500\]Total salary over 10 years $537500