McAlister Company is operating at capacity and desires to add a new service to its rapidly expanding business. The service should be added as long as service revenues exceed: the sum of variable costs, fixed costs, and any related opportunity costs. the sum of variable costs and fixed costs. variable costs. the sum of variable costs and any related opportunity costs. fixed costs.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

the answer is 3.1 his answer is wrong mines is right

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.