The number of shirts an associate at a local department store can fold and restock, r, varies directly with the amount of time the associate spends folding and restocking, t. if rebecca spends 2 h folding and restocking, she can fold and restock 129 shirts. which direct linear variation equation models the information? a. r=64.5t b. r=64.8t c. r=127t d. r=131t