Is this relation a function? {(0, 1), (1, 3), (2, 3), (3, 0)}

No, because at least one input maps to more than one output.

No, because at least one output maps to more than one input.

Yes, because every input has exactly one output.

Yes, because every output has exactly one input. NO LINKS I WILL REPORT YOU I WILL GIVE BRAINLIEST TO RIGHT ANSWER ASAP FAS

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?