Which of the following best describes the expression 12(x + 3)?
The product of a constant factor 12 and a 2-term factor x + 3
..
The sum of a constant factor 12 and a 2-term factor x + 3
Othere
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The sum of constant factors 12 and x + 3
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The product of constant factors 12 and x + 3

A.) the product of a constant factor 12 and a 2-term factor x+3

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.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed