The following is the estimated demand for "widgets":

Qw = 300 - 2Pw + 1.5Pz - 3Pf + 0.5Inc

w=widgets, z=zebs, f=flurps, Inc=income

Which of the following statements is correct?

Group of answer choices

- This demand function tells us flurps are normal goods.

- If consumer income were to increase the demand function would shift to the right on the graph.

- The sign in front of 2Pw should (-)

- Flurps are complementary goods to Widgets.