The answer is M=1
You need to have the m isolated so subtract 5 from each side than you are left with 3m=3 than divide by 3 because you want to know what m is than you are left with m=1
Keep dividing by 3 to get the rest of the answers.
To find the answer multiply $175 by 0.2. This will give you $35. Now, you have to subtract $175 by $35. Therefore, the sale price will be $140.
The answer to your question is B- 28.26
hope this helps :D