Neco 2022 Mathematics Question 11

Practice essay / theory question 11 from the 2022 Neco Mathematics examination. This question covers Graphs .

Neco 2022 Mathematics Essay / Theory
Topic: Graphs
Question 11 NECO • 2022 • MATHEMATICS • essay
Neco 2022 Mathematics Question 11 diagram

The graph below shows the monthly revenue (in thousands of naira) of a small business over six months.

Question Parts

( a )
Calculate the average rate of change of the revenue between month 2 and month 5. Express your answer in thousands of naira per month.
( b )
Assuming the revenue continues to increase linearly at the same rate as observed between month 4 and month 6, estimate the revenue for month 7.
( c )
Approximate the total revenue earned over the six months by using the trapezoidal rule on the graph. Give your answer to the nearest thousand naira.
( d )
From month 6 onward the business intends to increase its revenue by 20 % each month. (i) Write a general expression for the revenue in month \(n\) (where \(n\ge 6\)). (ii) Using this expression, calculate the expected revenue in month 9.
( ) Write the general expression for revenue in month \(n\).
( ) Calculate the revenue for month 9 using the expression.

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About This Question

This is Neco 2022 Mathematics Question 11. It is one of the essay questions from the 2022 Neco Mathematics examination.

The question covers Graphs .

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