exam Maths Puzzle Numerical Ability

The formula for calculating the amount of money returned for an initial deposit money into a bank account or CD (Certificate of Deposit) is given by:

A = P (1 + r/n)^nt

A is

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exam Other Question
Could someone help me with this problem please:solving for x 7x=3
This an example of one I did: 3X=81
3X (3)^4
X=4 Thank you in advance Elle J 7/2x+1/2x=3x+3/2+5/2x=