The answer would be 95 with no remainder
Brand A - Brand B = the difference
$46.29 - $42.8 = $3.49
Answer: $3.49
Every year, the price of the smartphone is the 
of the price of the previous year (since we lose the 
, we remain with the ).
Since can be written as 
, the price after one year will be
After two years, the price is the of the price after one year:
And so on: after three years we have
So, the answer is somewhere between three and four years.
A number raised<span> to a </span>negative power<span> is equal to 1 divided by the </span>number raised<span> to the same </span>power<span> but positive
</span>therefore
[-1/2]^-3-----------> [-2]^3 =-8
the answer is [-1/2]<span>^-3
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