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Umnica [9.8K]
3 years ago
10

Eight years from now,Oana will be twice as old as her brother is now. Oana is now 12 years old.How old is her brother now?

Mathematics
2 answers:
pishuonlain [190]3 years ago
6 0
Let's use x for Oana's age and y for her brother's age. That means
2y = x + 8
And Oana is 12 so...
2y = 12 + 8 --> 2y = 20 --> y = 10
Oana's brother is 10 years old now.
makkiz [27]3 years ago
4 0
Her brother is 10 years old
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Answer:

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We are given that the initial balance in the bank account is $270.

We are then told that every month $45 is added to the account.

To find the equation that tells us the balance at any point in time assuming no interest is added or money is taken out, we can first understand the constant, y=270.

This gives us the initial value of the balance and any changes to the balance will start from this point.

Let x be the time in months.

if we let y=270 + 45x, we find the value of the function accounting for the addition of money every month.

Assuming money is put in during January; substituting the number of months as x=6 (since it is June), we can find the balance in June.

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Answer:

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