The market for snow shovel is described by the following supply and demand curve

The market for snow shovel is described by the following supply and demand curve

The market for snow shovel is described by the following supply and demand curves:
d
s
P Q
P Q
150 4
30 2
= −
= +
a. Draw the curves. Be sure to label axes and curves.
b. Compute the equilibrium price and equilibrium quantity.
c. If the price is $90, what is the quantity supplied? What is the quantity demanded?
d. At a price of $90, is the market in equilibrium? If not, name the situation? What will happen? Why?
e. If the price is $58, what is the quantity supplied? What is the quantity demanded?
f. At a price of $58, is the market in equilibrium? If not, name the situation? What will happen? Why?