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Ms. Joseph is saving money for a trip to Zearnland over 12 weeks. She starts with 1 dollar. In the second week, she adds 2 dollars. Each week she adds 1 more dollar than she did the week before. How many weeks will she be saving money?

Sagot :

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Answer: $78

Step-by-step explanation:

You start out with $1

$2 = second week $3 = third week $4 = fourth week $5 = fifth week $6 = sixth week $7 = seventh week $8 = eighth week $9 = ninth week $10 = tenth week $11 = eleventh week $12 = twelth week

then you add it all up = 1+2+3+4+5+6+7+8+9+10+11+12 that would equal to $78

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