Solve Corey's Arithmetic Sequence Homework

[priscilla89]

Homework Statement

Corey has take a job with an initial salary of $26,000 an annual raises of $1,250/

(a) What will his salary be in the 6th year?

(b) How much money in total will Corey have earned after six years?

Homework Equations

an = a1 + (n - 1) d

Sn = n / 2 (a1 + an)

The Attempt at a Solution

(a) a6 = 26000 + (6 - 1) 1250

(b) S6 = 6/2 (26000 + 1250)

 

[rock.freak667]

The Attempt at a Solution

(a) a6 = 26000 + (6 - 1) 1250

(b) S6 = 6/2 (26000 + 1250)

You need to compute a₆ to get S₆ such that

S₆=6/2(26000+a₆)