The cost of a phone call is represented by the function C(t) = 0.3t, where t is the time spent on each call. Identify the domain of the function.

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?