Answer:
x ≥ 5
Explanation:
If we represent the donated amount by x, according to the problem x must have a value of at least $5 (because of the expression "you must donate at least $5").
This can be represented by the following inequality:
x ≥ 5
Where the symbol ≥ means "greater than or equal" which is the requirement in this case. So when reading the inequality x ≥ 5 we are saying that you must donate an amount equal to or greater than $ 5