BetterGrades Precalculus · Unit 7 · Assessment

Unit 7 Investigation

A multistage representation and verification task.

investigation

5 concrete stages

A multistage representation and verification task.

Investigation rubric

  1. represent the situation
  2. perform valid mathematical work
  3. interpret the result
  4. verify with a second representation
Assessment

Complete every required response

Item 101

Solve the representation example, then name the feature of additive versus multiplicative change that it illustrates: Classify2,6,18,542,6,18,54

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Item 202

Connect two representations for this example: Analyze −3⋅2(x−1)+4-3\cdot 2^(x-1)+4. Describe what a graph, table, mapping, or algebraic form would have to show.

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Item 303

Explain why this conclusion is valid: Continuous decay with one-unit multiplier e−0.3≈0.7408e^-0.3\approx 0.7408. Use the foundation problem as evidence: Interpret 80e(−0.3t)80e^(-0.3t).

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Item 404

Create a nearby example by changing one number or condition in this prompt: P(0)P(0) for 9001+8e−t\frac{900}{1+8e^-t}. Predict the effect, solve your new example, and compare it with the original.

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Item 505

Connect two representations for this example: Expand logb(5x3y)log_b(\frac{5x^3}{y}). Describe what a graph, table, mapping, or algebraic form would have to show.

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