Answer:
8.25% is the interest rate on this account
The answer to your problem is 10 oz
Answer :

Step-by-step explanation :
To find the product of

First we expand the bracket ,
it implies that, we use the expression outside the bracket to multiply individual expressions inside the bracket.
Hence


we now apply the law of indices

meaning, when you are multiplying two expressions with the same bases , repeat one of the bases and add the exponents.
Then, simplify to obtain
OK so the factor of 10 is 1 times 10 and 5 times 2