Andrew had an offer for a job starting at 100000 per year and guaranteeing her to raise of 10000 a year for the next years. Find her salary for the 4th year.

Correct answer:

a4 =  130000

Step-by-step explanation:

a1=100000 d=10000 a4=a1+(41) d=100000+(41) 10000=130000

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