Q 22

The profit earned when n items are produced is given by the function .If increasing production will result in a decrease in profits, what can be said about marginal profit ?
A) is positive.
B) is negative.
C) is zero.
D) is linear.

Q 24

A population changes with time.Its level after t years is given by the function .Over a certain period, the population is growing.What can be said about over this period?
A) is positive.
B) is negative.
C) is zero.
D) is linear.

Q 25

A population changes with time.Its level after t years is given by the function .Over a certain period, the population is declining.What can be said about over this period?
A) is positive.
B) is negative.
C) is zero.
D) is linear.