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konstantin123 [22]
3 years ago
12

Ethan is saving money in his piggy bank for his upcoming trip to Disney World. On the first day, he put in $12 and plans to add

seven more dollars each day.
Part A: Write an explicit formula that can be used to find the amount of money saved on any given day.

Part B: How much money will he have on the 18th day?
Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
7 0

Answer:

A

12+7x=a

x=days

a=amount of money

B 12+7x=a

Step-by-step explanation:

7(18)=126

12+126=a

138=a

Dovator [93]3 years ago
7 0

Step-by-step explanation:

part A:12+7x

first day 12+7=$19

second day 19+7=$26

third day 26+7=$33

....

so

number of moneys on x day will be

12+7*x where x represent the number of days

so

for three days

12+7*3=12+21=33

part B:138

12+7x where x=18

12+7*18=12+126=$138

He will have $138 on the 18th day.

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