# math

posted by
**mathstudent05**
.

i also need help with this one:

Supply and Demand let the supply and demand functions for butter pecan cream be given by.

P= s(q)= (2)/(5)q and p = D(q) = 81- (3)/(4)q

where p is the price in dollars and q is the number of batches.

A) Find the equilibrium quantity and the quilibrium price.

is there a formula for this because i am not understanding?