Write a trinomial expression of the third degree written with a leading coefficient of seven and a constant of six

the Degree and Leading Coefficient of Polynomials . If a term does not contain a variable, it is called a constant. . A polynomial is an expression that can be written in the form. Identify the degree, leading term, and leading coefficient of the polynomial 4 x 2 − x 6 + 2 x − 6 \display style 4{x}^{2}-{x}^{6}+2x - 6

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

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.