Chapter 3&4 AM025

The demand function in RM, for x units of computer component is given by p(x) = 350 - 0.2x.

Find the revenue function.

• R(X)=350-0.2X²

• R(X)=350X-0.1X²

• R(X)=350X-0.2X²

• R(X)=350X-0.2X

Given the revenue function, R(x) = 200x - 0.002x² and the

cost function, C(x) = 80 000 + 50x + 0.001x². Find the:

(i) Profit function

(ii) Marginal profit function

• (i) -80000+150x-0.003x²

  (ii) 150-0.006x

• (i) -8000+150x-0.003x²

  (ii) 150-0.006x

• (i) -80000+150x-0.003x²

  (ii) 150-0.006x²

• (i) -80000+150x-0.003x²

  (ii) 150-0.0006x

The average cost function of a company that manufactures computer chips is 2000/x + 4.

Find the cost function

• 200+4x

• 2000x+4

• 2000+4x

• 2000x+4x²

Which of the following statements correctly describes the graphical representation of the demand and supply curves?

• The demand curve is a downward-sloping parabola, and the supply curve is an upward-sloping parabola.

• The demand curve is an upward-sloping parabola, and the supply curve is a downward-sloping parabola.

• Both the demand and supply curves are linear.

• The supply curve is a straight line, while the demand curve is a parabola.

The demand function and supply function are

D(x) = -x² - 6x + 8 and S(x) = x² respectively.

Find the market equilibrium point.

• (1,0)

• (2,2)

• (1,2)

• (1,1)

The demand function and supply function are

D(x) = -x² - 6x + 8 and S(x) = x² respectively. Calculate the consumer'surplus.

• RM4.25

• RM 3.67

• RM2.75

• RM5.12

The demand function and supply function are

D(x) = -x² - 6x + 8 and S(x) = x² respectively. Calculate the producer's surplus.

• RM1.25

• RM3.00

• RM0.67

• RM2.15

Which of the following variable is qualitative?

• The height of the students

• The gender of the visitors

• The weight of parcels in the post office

• The age of the staff

The scores that students got in their examination are as follows:

80, 70, 95, 82, 90, 75, 78, 82

Find the mean and median of the data.

• Mean=81

  Median=81

• Mean=81

  Median=81.5

• Mean=81.5

  Median=81.5

• Mean=81.5

  Median=81

The math test scores of five students are: 80, 85, 90, 95, and 100.

Calculate the variance of their scores.

• 7.91

• 65.2

• 62.5

• 7.19