Birds and mammals are living components of an ecosystem, also called _________________ components.

Section 4.1If the function is one-to-one, find its inverse. If not, write “not one-to-one.”  {(-2, 4), (2, -4), (8, -2), (-8, 2)}

Section 4.2Find the future value.  $4123 invested for 10 years at 3% compounded annually

Section 4.6Solve the problem.  The population growth of an animal species is described by F(t)=400 log(2t+3) where t is measured in months. Find the population of this species in an area 6 months after the species is introduced.

Find the function value. If the result is irrational, round your answer to the nearest thousandth.    Let  f ( x ) = 4 x . Find  f 5 2

Section 4.2Solve the equation. Round to the nearest thousandth.  9 (x + 4) = 3 x

Section 4.6Solve the problem.  The growth in the mouse population at a certain county dump can be modeled by the exponential function A(t)=213e0.029t where t is the number of months since the population was first recorded. Estimate the population after 39 months.

Section 4.5Solve the equation.  logx8=3

Section 4.3Use the properties of logarithms to rewrite the expression. Simplify the result if possible. Assume all variables represent positive real numbers.  log a(2x 6y)

Section 4.4Use the change of base rule to find the logarithm to four decimal places.  log9 30.5