Step-by-step explanation:
<h3>I hope it helps </h3>
<h3>stay safe</h3>
A. 3^n 3^20
b.N^n N^20
c.12^n 12^9
d.237^n 237^4
You would measure the length of a segment with a straightedge because it is free from curves and can help measure a segment because it is straight.
6+9=15
y+9=x
x=30
y+9=30
y=21
The factors are 3 6 and 9