Answer:
$4.257 
Step-by-step explanation:
Given:
Items delivered per hour = 14
Fixed hourly costs = $47 
variable cost = $0.90
Now, 
at breakeven point, the profit = 0
or
Total revenue = total cost
let the charge at breakeven point be 'x'
thus,
x × 14 = $47 +  ($0.90 × 14)
or
x × 14 = $47 + $12.6
14x = $59.6
or
x = $4.257 
Hence, the breakeven charges are $4.257