Can you please check if I'm doing it correctly and if not can you give me an explanation?Thank you

Assuming a normal market, with a positively sloped supply and negatively sloped demand, which is initially in equilibrium. Given the situation stated below, fill in the blanks matching the effect as either: increase, decrease, no change or indeterminate (cannot determine). Market for Cars The price of steel falls and the cost of automobile insurance doubles. As a result, (a) Supply will increase (b) Demand will decrease (C) Equilibrium price will decrease (d) Equilibrium quantity will decreaseGiven the demand and supply for water dispensers: Qd = 750 - 16 P Qs = -50 + 18 P 1. The market equilibrium price is 23.53 2. The market equilibrium quantity is 373.54 3. What is the value of the demand curve's vertical intercept ? 46.88 4. What is the value of the supply curve's vertical intercept? 2.78 5. What is the Consumer's Surplus? 4361.10 6. What is the Producer's Surplus? 3875.48