Answer:
A variable is a letter used in a mathematical equations , formula or expression
Answer: I believe the answer is D
m1=12 and m2=168
Step-by-step explanation:
15,000
10x10x30
10x10=100
100x30=3,000
50x20x12
50x20=1,000
1,000x12=12,000
3,000+12,000=15,000
