Question
For hook-up, determine whether there is a single repeater machine that will do the same work. If so, describe or draw it. 
✓
Answer
Using law of exponents, $(a^m× a^n= a^{m+n})$ $[\therefore$ a is non-zero integer$]$
Hook-up machine can do the work $= 7^3× 7^2= 7^5$
So, $(x7^5)$ single machine can do the same work.
Diagram of single $x7^5$ machine
.
Hook-up machine can do the work $= 7^3× 7^2= 7^5$
So, $(x7^5)$ single machine can do the same work.
Diagram of single $x7^5$ machine
.
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