A person hired a firm to build a CB radio tower. The firm charges $100 for labor for the first 10 feet. After that, the cost of the labor for each succeeding 10 feet is $25 more than the preceding 10 feet. That is , the next 10 feet will cost $125, the next 10 feet will cost $150, etc. How much will i cost to build a 90 foot tower? Please help....specify whether it involves an arithmetic sequence or a geometric sequence and use the proper formulas

Question

anonymous · Answer

It may be useful to list the first three terms that you have been given.
ie  100, 125, 150
Study the pattern.
What is the difference between terms.  Or asked another way,  how do you make the next term from the term you have?

anonymous · Answer

I dont understand

anonymous · Answer

what do you add to 100 to get 125?