Unit Test Answers

Which is the graph of the sequence defined by the function f(x) = 100(0.5)x - 1?

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

Which explains why the graphs of geometric sequences are a series of unconnected points rather than a smooth curve?

Which is the graph of ?

Which formula can be used to describe the sequence?

Which function represents exponential decay?

Which is the graph of the sequence defined by the function f(x + 1) = f(x) when the first term in the sequence is 375?

Which is the graph of f(x) = 2(3)x?

Which function represents exponential growth?

Pherris is graphing the function f(x) = 2(3)x. He begins with the point (1, 6). Which could be the next point on his graph?

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?

An exponential growth function has an asymptote of y = –3. Which might have occurred in the original function to permit the range to include negative numbers?

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.)