Exponential Decay Functions — Unit test Answers

Tanisha is graphing the function f(x) = 25()x. She begins by plotting the point (1, 15). Which could be the next point she plots on the graph?

Which describes the range of the parent absolute value function?

Which function represents exponential growth?

Which function represents exponential decay?

Which is equivalent to ?

Which is equivalent to ?

Which is the graph of ?

What is the simplified form of the following expression?

Combine these radicals.

The function f(x) = 5 is reflected over the y-axis. Which equations represent the reflected function? Select two options.f(x) = f(x) = f(x) = 5f(x) = 5(5)xf(x) = 5(5)–x

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Which expression is equivalent to ?

Which graph shows a function with a range of all real numbers greater than or equal to –1?

f(x) = g(x) = – 3

An account is opened with $7,595.96 with a rate of increase of 2% per year. After 1 year, the bank account contains $7,746.90. Assuming no deposits or withdrawals are made, which equation can be used to find y, the amount of money in the account after x years? (Round money values to the nearest penny.)