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1 markSubstitution in Algebraic Expressions

CSEC Mathematics · May/June 2018 · Paper 2 · Question 1(b)(i)

Jenny works at Sammy's Restaurant and is paid according to a weekly wage agreement: Basic wage 600.00 PLUS 0.90 for each customer served. In a week when Jenny serves n customers, her weekly wage, W_J, in dollars, is given by the formula W_J = 600 + 0.90n.

Determine Jenny's weekly wage if she served 230 customers.

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Other parts of this question

  1. 1(a)(i)73.18 - 5.23 × 9.34[1 mark]
  2. 1(a)(ii)3.1² / 6.17 + 1.12[1 mark]
  3. 1(b)(ii)In a good week, Jenny's wage is $1 000.00 or more. What is the LEAST number of customers that Jenny must serve in order to have a good week?[2 marks]
  4. 1(b)(iii)If W_S is Shawna's weekly wage, in dollars, write a formula for calculating Shawna's weekly wage when she serves m customers.[1 mark]
  5. 1(b)(iv)In a certain week, Jenny and Shawna received the same wage for serving the same number of customers. How many customers did they EACH serve?[3 marks]

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