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Type: Multiple-Choice
Category: Functions and Relations
Level: Grade 11
Standards: HSF-BF.A.1, HSF-BF.A.1a
Tags: HSF-BF.A.1, HSF-BF.A.1a,
Author: HTPhysics
Last Modified: 3 months ago

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Grade 11 Functions and Relations CCSS: HSF-BF.A.1, HSF-BF.A.1a

A store offers a discount of $2 on every additional item purchased after the first one. If the first item costs $20, what is the total cost, T(n), of n items?
  1. T(n)=20+2n
  2. T(n)=20+18(n−1)
  3. T(n)=20n−2
  4. T(n)=20+18n