Some students want to order shirts with their school logo. one company charges $9.65 per shirt plus a setup fee of $43. another company charges $8.40 per shirt plus a $58 fee. at what cost would the students be able to order the same number of shirts?

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.