5:7, 15:21. Hope this helps!!!
Answer:
The third option.
Step-by-step explanation:

Hence the 3rd option.
Answer:
-5
Step-by-step explanation:
15=-x+10
x-10=-15
x=-15+10
x=-5
Answer:
I think the equation is 12000=7500r
I think the rate of commission is 16
Step-by-step explanation:
hope this helps, and donate a brainliest if possible... thx