Answer:
21 bleachers are the minimum needed
Step-by-step explanation:
15a^3b^4c^5----> answer B
you can only multiple like terms so
(5x3)= 15
now just add
a+a^2= a^3
b + b^3 = b^4
c^5 + 0= c^5
1a. Yes
1b. No
1c. Yes
Your answer is A:5
210 x 297 mm
Hope that this helps!