Simplify the expression: (a^4b^5c^6)^3

a^7b^8c^9

a^12b^4c^18

a^4b^5c^6

a^12b^15c^18

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.