Can someone please help me

Use the second shift theorem to find the inverse laplace transform of (e^−3s) / (s^2 + 2s − 3)

The slope of the line whose equation is y - 3 = 0 is 0 3 no slope

Anut store normally sells cashews for? $4.00 per pound and peanuts for? $1.50 per pound. but at the end of the month the peanuts had not sold? well, so, in order to sell 40 pounds of? peanuts, the manager decided to mix the 40 pounds of peanuts with some cashews and sell the mixture for $2.00 per pound. how many pounds of cashews should be mixed with the peanuts to ensure no change in the? profit?