Installing a power line A power line is to be installed across a river that is 1 mile wide...

Installing a power line A power line is to be installed across a river that is 1 mile wide to a town that is 5 miles

downstream (see the figure). It costs $7500 per mile to lay the cable underwater and $6000 per mile to lay it overland. Determine how the cable should be installed if $35,000 has been allocated for this project.

EXERCISE