PLEASE INCLUDE ALL FORMULAS,STEPS,IDENTITIES OR HELPFUL COMMENTS YOU USED FOR PART 1A AND 1B GRAPH SOLUTION THANK YOU!

NLC : =k(T - Te) , RL circuit : L- dt + RI = Vin skydiving : my = mg - kv , RC circuit : RC- adv at + V = Vin Water containing 0.2 1b/gal of salt enters a tank at a rate of 3 gal/min and leaves the tank at a rate of 1 gal/min. Suppose the tank initially contains 200 gallons of water and 10 lb of salt. (a) (15 points) Solve for the amount of salt in the tank, a(t).W 4001 (b) (5 points) Sketch the solution