Category Month 1 Month 2 Month 3 Food Mortgage Car Loan Electric Phone Water/Sewer Internet Gas Repairs Movie Newspaper Savings Insurance Donations Miscellaneous $ 275 772.40 152.54 225 45 18 20 80 0 20 45 299 240 $ 300 772.40 152.54 190 65 18 20 80 119 20 0 180 140 $ 325 772.40 152.54 207.21 75 18 20 80 0 20 0 299 140 60 60 60 The highest spending for food occurred in O month 1 month 2 month 3​

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the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.