Write an equation expression with positive exponents only.

x^4 * (1/y^2)

Step-by-step explanation:

A negative exponent is just the reciprocal of the positive version of the exponent.

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.