A computer manufacturer developed the following demand curve.
Q = - 700(P) + 80(I) - 500(S) + 0.01(A)
Where P is the price of a computer, I is income of computer purchasers ($45,000), S is the price of software ($400) and A is the company advertising expense ($50,000,000)
How much will computers sales change by if the company increases computer price by $100 from $1,000 to $1,100?