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Common Core Standard HSF-BF.A.1a Questions

Determine an explicit expression, a recursive process, or steps for calculation from a context.

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Grade 9 Nonlinear Equations and Functions CCSS: HSF-BF.A.1, HSF-BF.A.1a, HSF-LE.B.5
In the year 2000, the population of Virginia was about 7,400,000. Between the years 2000 and 2004, the population in Virginia grew at a rate of 5.4%. At this growth rate, what function gives the population x years after 2000?
  1. f(x)=7,400,000(1+.054)x
  2. f(x)=7,400,000(1-.054)x
  3. f(x)=7,400,000(.054)x
  4. f(x)=7,400,000x.054
Grade 12 Functions and Relations CCSS: HSF-BF.A.1, HSF-BF.A.1a, HSF-BF.B.5, HSF-LE.A.2
A bacteria colony covers 5 cm2 and grows exponentially. After 4 days it covers 80 cm2. How much area will it cover after 2 weeks?
  1. 8.2 m2
  2. 4300 cm2
  3. 4.3 m2
  4. 1393 cm2
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