Final answer:
The equation representing the cost of each lime in the situation where limes are sold at 4 for $1.00 is c = $0.25, where c is the cost of one lime.
Step-by-step explanation:
The local grocery store's sale of limes can be represented by a simple equation. If we denote the cost of each lime as c, then four limes cost 4c dollars. According to the store's offer, 4 limes for $1.00, we can write the equation as 4c = $1.00. To find the cost of each lime, we divide both sides of the equation by 4 resulting in c = $1.00 / 4. Therefore, the equation representing the cost of each lime is c = $0.25.