Flashback

Flashback 9-12-12 The volume,V, of the right circular cone with radiusrand heighth, shown below, can be found using the formulaV= 1/3r^2h. A cone-shaped paper cup has a volume of 142cubic centimeters and a height of 8.5centimeters. What is the radius, to the nearest centimeter, of the paper cup?A.2B.4C.8D.12E.16

A boat departs Port Isabelle, Texas, traveling to an oil rig. The oil rig is located 9miles east and 12miles north of the boats departure point. About how many miles is the oil rig from the departure point?F.3G.H.15J.21K.225

Joke of the dayA rubber band pistol was confiscated from algebra class

because it was a weapon of math destruction.

What do you knowOne-to one functions

Horizontal line test

Inverse functionsOne-to one functionsEvery value of x has exactly 1 y valueExamples: linear functions, square root functions, cubic functions

Horizontal line testHorizontal line will cross the graph of the function no more than one time at any y-value.Inverse functionsInverse function multiplied by the original function gives the identity function. (1)Way to solve more complex equations like exponential functions.Can be found by switching the position of the x and y in the equation and solving for y.Can also be found using parametric functions.ExampleFind the inverse of f(x) = 2x - 4AnotherFind the inverse of f(x) = X2

Now, parametricallyClass/homeworkP. 44 EX. 2-24 evensExit Slip1. Which of the following is the inverse of f(x) = 3x - 2?

A. g(x) = 1/(3x - 2) b. g(x) = x c. g(x) = 3x - 2 d. g(x) = (x - 2)/3 e. g(x) = (x+ 2)/3