a$.$ What is the maximum amount we can decrease the profit of Speedbusters by$?$ Answer to two decimal places

b$.$ If the unit profit for SpeedBuster is decreased to $$124,$ how will the profit change?

c$.$ What is the maximum allowable increase for the LaserStop Product?

d$.$ If an additional $1,000$ units of component A are available, what will be the change in the profit? Answer to two decimal places.