a pet shop sells a 6 can multipack of dog food for £3.18 and a 15 can multipack for £7.80. which multipack is the best value for
2 answers:
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Equal expressions can be taken equal to an another variable. The system of equations representing the equation is
When you raise a number with an exponent, there comes a result.
Lets say you get
Then, you can write 'b' in terms of 'a' and 'c' using logarithm as follows
Some properties of logarithm are:
Log with base e = 2.71828... is written as simply.
Log with base 10 is written as simply.
The given equation is:
Adding on both the sides, we get:
The, we get two equations as:
This is the needed system of equations.
Learn more about logarithms here: