At an amusement park, a person spends $30 on admission and food, and then goes on number of rides that cost $2 each.
I
a. Write an equation to represent the total amount A spent
at the amusement park if a person goes on anywhere from 0 to
5 rides.
b. Represent the relation as a table, as a graph, and as a mapping
diagram
c. Find the domain and range, and then determine whether the
relation is a function or not.

a, A= $30 + $2x

x could be 0 - 5

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.