Page 20 - Math SL HB Sem 1

SIIOI CE AND

Example 4: 'I'he starting salary for a clerk is RM9600 per year. The annual increment is

RM 780.

(a) How much the clerk earns at her 20th vear?

(b) What is her total income lor l0 vears?

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Example 5: The sum of the first n terms of an Ap is S, - n - 3n. Write down the fourth
term and the n" term_

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