Answer:
this is my 50th time seeing you
Step-by-step explanation:
Answer:
3x + 30
Step-by-step explanation:

3x + 30 would be an equivalent expression.
Hope this helps.
Answer is A or your first option.
Answer:
0.5kg per foot
Step-by-step explanation:
1/3 : 2/3
1 : 2
1 kg is 2 feet
0.5 kg/foot