A printing service charges a set-up fee of $ 14.25 for each order and 10 cents more for each copy. The total cost, C (in dollars), for an order of x copies is given by the following.
C=0.10x+14.25
What is the total cost for an order of 40 copies?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a. m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?