What number is next in the sequence 1 , 6 , 18

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x