Let's begin by listing out the given information:
Apples cost $1.89 per pound (I highlighted the cost of Apples as that is our focus)
Cherries cost $5.28 per pound
Grapes cost $2.78 per pound
Amount of apples = 3.2 pounds
Estimate the cost of 3.2 pounds of apples, we have:
Cost of 3.2 pounds of Apples = cost of apples per pound * the amount of apples
Cost of apples = 1.89 * 3.2 = $6.048
Cost of apples = $6.05