Unit 8 Final Exam Review - Algebra 1

Which of the following shows the graph of the exponential function  $f\left(x\right)=3\left(1.9\right)^x$ ?

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Tags

CCSS.HSF-IF.C.7E

What is the domain of the exponential function shown?

• x > 0

• x ≥ 0

• x > -4

• x ≥ -4

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Write an equation to represent the exponential function shown in the table.

• $y=50\left(5\right)^x$

• $y=10\left(5\right)^x$

• $y=50\left(\frac{1}{5}\right)^x$

• $y=10\left(\frac{1}{5}\right)^x$

Tags

CCSS.HSF.LE.A.2

Bacteria can multiply at an alarming rate when each bacteria split into two new cells. If we start with only one bacterial which can double every hour, what is the equation to find the number of cells after x hours?

• $y=2^x$

• $y=4^x$

• $y=2\left(1\right)^x$

• $y=2\left(4\right)^x$

Tags

CCSS.HSF.LE.A.2

The population of a town decreased by 4.7% annually for the past decade. The population today is 4,670. Which function models the population y after t years from today assuming the rate of decrease does not change?

• $y=4,760\left(0.953\right)^t$

• $y=4,670\left(1.047\right)^t$

• $y=4,670\left(0.53\right)^t$

• $y=4,670\left(0.053\right)^t$

Tags

CCSS.HSF.LE.A.2