Question

Emilio owns a bakery. The number of boxes of cookies he has left on a Monday is represented by the function x + y = 42, where y is the number of boxes of cookies remaining in the bakery and x is the number of hours since he opened the bakery. How many boxes did he have at the start of business on Monday? (Note: x ≥ 0, y ≥ 0, and y takes only integer values.)

Answer 1

When Emilio started his business on Monday, he had spent x=0 hours. Since x+y=42, then y+0=42 and y=42 - the amount of boxes Emilio had at the start of his business