Question

Find a single repeater machine that will do the same work as hook-up.

Answer 1

Using law of exponents, (a^m × aⁿ = a^{m + n})   ...[∵ a is non-zero integer]

Repeater machine can do the work is equal to 3^y × 3^y = 3^2y.

So, (× 3^2y) single machine can do the same work.