Question

#35 "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 it cost to build a 90-foot tower?"

Answer 1

i also need to know what the
• This sequence is: (arithmetic or geometric).
• The cost to build the tower is 300
STEPS/CALCULTATIONS YOU PERFORMED TO REACH THE ANSWER:

and i am having trouble figuring it out i know the cost is 300

Answer 2

Can someone please help