Let x be the initial amount of money. We know that mum spent 2/3 of this amount, so she's left with
Of this remainder, only 1/4 was deposited, which is
And this amount equals 20, so we have
What is the exponential expression for the numerical expression 3⋅3⋅3⋅3 ? 43 4⋅34 124 34
1 answer:
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ANSWER
EXPLANATION
The given geometric sequence is
400, 200, 100...
The first term is
The common ratio is
The nth term is
We substitute the known values to get;