Answer:
Total sales for first 10 years=$69,000
Step-by-step explanation:
First year=$15,000
He plans increasing annual sales by $6,000 each year for 9 years.
Second year sales= $15,000+$6,000
=$21,000
Third year sales=$21,000+$6,000
=$27,000
Fourth year sales=$27,000+$6,000
=$33,000
Fifth Year sales=$33,000+$6,000
=$39,000
Sixth year sales=$39,000+$6,000
=$45,000
Seventh year sales=$45,000+$6,000
=$51,000
Eighth year sales=$51,000+$6,000
=$57,000
Ninth year sales=$57,000+$6,000
=$63,000
Tenth year sales=$63,000+$6,000
=$69,000
Or
$6,000×9 years+$15,000
=$54,000+$15,000
=$69,000