An electrician charges $100 per visit plus $75/h for house calls. Write an algebraic expression that describes the service charges for one household visit. Use your expressions to find the total service charge for a 2.5 –h repair job.

Write a recursive sequence that represents the sequence defined by the following explicit formula:

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236