+17 bc you want to do the opposite so then it’s 17+10 which gets you x=27
This is a percent proportion answer I think so you need to use the percent proportion formula and find the answer
This should be simple, add the Amounts of snow for the first week
4.32 + 6.86 = 11.18
-------------------------------------------------------
The subtract the amounts of snow from each week
11.18 - 7.89 = 3.29
----------------------------------------
C.) 3.29 is your answer