Answer:
580
Step-by-step explanation:
31(20) + 7(20) - 21(20) +12(20)
620 + 140 - 420 + 240
<u>answers to 1 - 4:</u>
1.<em> </em><em>GCF: </em>2
2. <em>GCF:</em> 3
3. <em>GCF : </em>7
4.<em> GCF:</em> 3
z^3
Z cubed is Z X Z X Z = Z^3
86 degrees
Hope this helps!
