Tim is an engineer making $120,024 annually and will be paid once a month. Each month he will have the following deductions taken from his paycheck:
- Social Security at a rate of 5.7%
- Medicare at a rate of 2.1%
- State taxes at a rate of 7%
- Federal taxes at a rate of 15%
- Insurance premiums for the amount of $474

How much is Tim’s GROSS MONTHLY salary?

How much is Tim’s NET MONTHLY salary?

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.

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

the answer to your question is b.