15 (20)+6(60-20)= 240
15 (30)+6(60-30)=630
15(40)+6(60-40)=720
you can conclude that none of the numbers have anything in common except that they all end in a 0
Answer:
7
Step-by-step explanation:
2×3.7=7 is easy and less money
Answer:
what do we have to solve? surface area? volume?