PLEASE HELP!! ASAP! :(
Gus has a lunch food budget of $190 per month. He spends an average of $7 per day on lunch. Which of the following equations represents how much money is left in his lunch budget after x days of buying lunch?
A. y = 190 - 7x
B. y = 7x - 190
C. y = 190 + 7x
D. y = 190x - 7