Explanation

The required answers should include:

i. Statement of the central theme of love and marriage in a middle/upper-class society.

ii. Character identification.

iii. The plan to elope.

iv. The attempt to elope.

v. Tony’s remedy.

Correct Answer: D. liquidator

Correct Answer: B. upstream and downstream

Explanation

The term upstream and downstream is used in the oil and gas industry to refer to the various activities of an oil or gas company. Upstream activities involves companies who extract or produce raw materials used in the production of oil and gas while Downstream industry are those who are involved in the distribution, sale and delivering of the refined products to the final customers.

Explanation

(a) (i) Themarginal revenue formula is calculated by dividing the change in totalrevenue by the change in quantity sold. In the case of the question asked, the output (kg) represents the quantity sold.

At output level 15, \(MR = \frac{30 - 0}{15 - 0} = \frac{30}{15} = $2.00\)

At output level 35, \(MR = \frac{70 - 30}{35 - 15} = \frac{40}{20} = $2.00\)

At output level 60, \(MR = \frac{120 - 70}{60 - 35} = \frac{50}{25} = $2.00\)

At output level 85, \(MR = \frac{170 - 120}{85 - 65} = \frac{50}{25} = $2.00\)

(ii) TheMarginal Cost Formulais calculated by dividing the change in Total Cost by the change in quantity sold (or output as regards this question).

At output level 15, \(MC = \frac{45 - 15}{15 - 0} = \frac{30}{15} = $2.00\)

At output level 35, \(MC = \frac{70 - 45}{35 - 15} = \frac{25}{20} = $1.25\)

At output level 60, \(MC = \frac{90 - 70}{60 - 35} = \frac{20}{25} = $0.80\)

At output level 85, \(MC = \frac{105 - 90}{85 - 65} = \frac{15}{25} = $0.60\)

(b)(i) The firm's break-even point is at output level 35.

(ii) The firm makes the highest profit at output level 85.

(iii) The firm attains equilibrium at output level 15.

(c) The firm is operating in perfectly competitive market.

Correct Answer: D. purity of heart and righteousness

Correct Answer: C. 148.5cm3

Explanation

Volume of a cone = \(\frac{1}{3} \pi r^2 h\)

r = 4\(\frac{1}{2}\) cm; h = 14 cm

Volume of cone = \(\frac{1}{3} \times \frac{22}{7} \times \frac{9}{2} \times \frac{9}{2} \times 14\)

= 297 cm\(^3\)

When half- filled, the volume of the water = \(\frac{297}{2} = 148.5 cm^3\)

Correct Answer: C. elites

Correct Answer: C. detests

Explanation

(a) Ways in which science and technology have contributed to agricultural development:

(i) Crop protection

- Producing equipment for pesticides and herbicides application

- Herbicides for weed control

- Nematicides for the control of nematodes

- Fungicides for the control of fungi

- Pesticides for the control of pests in plants

- Insecticides for control of insects

-Rodenticides for control of rodents

- Avicides for control of birds

- Molluscides for the control of molluscs

- Bactericides for the control of bacteria

- Sterilization of plant materials

- Soil sterilization

- Breeding disease resistant varieties of crops

- Irradiation to enhance storage of farm produce.

(ii) Climatology and meteorology:

- Forecasting rainfall pattern to determine planting and harvesting dates

- Forecasting temperatures to produce drying and prediction of disease and pest outbreak

- Monitoring of wind speed

- Monitoring of wind direction

- Cloud seeding for rainfall

- Determination of relative humidity

- Monitoring cloud formation and movement

- Measurement of solar radiation

- To determine types of crops to plant e.g. early maturing

- Producing equipment for weather forcasting

(b) Functions of farm machines and implements

(i) Bulldozer:

- Leveling of land surface

- Moving large quantities of earth

- Uprooting stumps

- Removing, obstacles

- Felling trees Clearing virgin lands/Bush clearing

- Road construction on farms in rural areas

(ii) Combine harvester: Harvesting of cereals

- Threshing of cereals

- Winnowing of harvested grains

- Bagging of harvested grains

(iii) Tractor

-Transportation of human beings

-Pumping of water through the use of Power-Take-Off (P. T. 0)

-Lifting of equipment with the aid of the hydraulic system e.g. mower

-Allows the use of farm implements for land preparation e.g. plough, harrow, ridger etc.

-Provides power to drive stationary farm equipment e.g. milking machines, shellers, etc.

-Generates electricity

- For carting farm produce and inputs /haulage

(iv) Sprayer

- Application of herbicides, fungicides, insecticides, etc.

- Application of liquid fertilizers

-Application of plant hormones

(v) Planter

- Sowing of seeds

- Application of fertilizers

- Application of nematicides/ pesticides

Correct Answer: A. further the interest of members