In two weeks you will spend £351
First you will need to find out how much you spend each week or 1 week.
Each day: £9+£15=£24, so each week: £24 x 7= £168
you also pay 7.50 so £168+£7.50=£175.50
To find out your total expense for two weeks
Multiply £175.50 x 2= £351
So you spend £351 in two weeks