The state of Wyoming manages several state parks. Over the last few years Wyoming has seen an increase in non-native in

[answerhappygod]

The state of Wyoming manages several state parks. Over the
last few years Wyoming has seen an increase in non-native insects
which are infecting many of the trees in their state parks. This
problem has been particularly bad in one park that covers an area
of 150 square miles. In order to save the integrity of the forest
land, elimination of this foreign pest is a must. The state
has two options to exterminate these insects, methods A and
B. Method A is 70% effective and will cost $28,000 per square
mile. Method B is 85% effective at a cost of $36,000 per
square mile.
If Wyoming could not receive a grant for the cost of the
extermination, which method should they choose if they had a budget
of $1.5 million?