An unknown number x is at most 20. which graph best represents all the values of x?

number line graph with closed circle on 20 and shading to the right.
number line graph with open circle on 20 and shading to the right
number line graph with closed circle on 20 and shading to the left.
number line graph with open circle on 20 and shading to the left

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.

a

step-by-step explanation: