What increases when productivity increases?

Question

a) Gross Domestic Product ***
b) interest rates on loans
c) national unemployment rates
d) interest rates on savings

"Deepak's city has grown quite a lot over the past ten years. The city council has been discussing the need for a second fire department so that one would serve the Northern part of the city and the other would serve the Southern part. The city doesn't have much room in the budget, so some people have suggested privatizing the fire department. However, others argue that it's critical, that this would not work, and that it should be a public service."

Why would it be best for the new fire department to be provided as a public service?
a) Fire departments are too expensive for Entrepreneurs to provide
b) Demand for the fire department is greater than it's supply
c) the service should remain unlimited and accesible to all ***
d) not many people are interested in using the service

Which of these is a source of only federal tax revenue?
a) payroll taxes***
b) property taxes
c) sales taxes
d) income taxes

Which type of investment are stocks?
a) lending
b) ownership
c) cash equivalent***
d) interest

eddie has a credit card on which he makes monthly payments and tries not to carry a balance. What kind of credit is this?
(there are two answers)
a) non-revolving
b) revolving ***
c) secured
d) unsecured
e) flexible ***

what is a regular car payment an example of?
a) fixed expense ***
b) variable expense
c) interest
d) ownership investment

I'd appreciate it if you guys didn't just tell me i'm wrong. Can you tell me which is right and why?
Thanks.

Answer 1

#4 is wrong. The others are right.

Answer 2

Would it be Unsecured and non-revolving?

Answer 3

I count that as the fifth question, and you were right the first time. You should number your questions so we don't get confused. The one you are, I believe, in error on is the one about stock ownership.