Wendy pays $49.95 to belong to a racquet and fitness club. As a member, she can take individual tennis lessons eat the club for $25 each. The function c=25n+49.95 represents the total cost c of her membership and lessons if she takes n lessons. Determine appropriate input values for this situation.

CHOOSE ONE ANSWER IN EACH PARENTHESES:
Only (whole, negative whole, positive rational, or negative rational) numbers make sense for the input because you cannon take a (negative or positive) number of lessons. It does not make sense to use (fractional or negative) numbers because you cannot take part of a lesson.