Answer:
1. 7r
Its simple 7 times r = the number of chairs.
2. g - 29
Kenneth has 29 more than maggie or maggie has 29 fewer because we are finding out how many maggie has you have to subtract so g - 29
3. 40m + 35
For this question We have the variable M which is used for months you get charged 40$ a month with a one time activation fee. leaving only option C. as the correct answer.
4. 5m
The reason here, is there are 5 total people helping. m represents money therefore it must be 5m.
5. b +35
This is just simply reading the question. You are trying to find the amount mitch will have meaning the given variable and number are all you need. So given that the answer will be b + 35.
6. 8h - 20
This will be the equation which you need. you are given all the information needed without doing work. First look at hours. He is paid $8 an hour. He works an unknown amount of hours a day so 8h. Finally he is subtracted $20 for gas leaving you with the equation 8h - 20.
Have a great day all.