If you were to plan a party, you could use a linear equation. for example, the room you are renting is $500. The price for food per person is $10
247 is equal to 200+40+7.
358 is equal to 300+50+8.
To find the answer, add 200+300=500.
40+50=90
7+8=15
500+90+15=605
The answer is 605.
I would believe it to be option 2 Because (m) will be meals but for it to be less would be 500+15m>1000+5m
m = 4b+3 mikes age
m +b <138 mike +brother less than 138
4b+3+b<138
5b +3< 138
b< 135
b <27
The oldest the brother can be is 26