Wednesday

September 17, 2014

September 17, 2014

Posted by **John** on Sunday, August 7, 2011 at 11:13pm.

1). 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?

2). A person deposited $500 in a savings account that pays 5% annual interest that is compounded yearly. At the end of 10 years, how much money will be in the savings account?

- Math -
**Reiny**, Monday, August 8, 2011 at 7:22amost = 100 + 125 + 150 + 175 + for 9 terms

This is an arithmetic series

a = 100

d = 25

n = 9

Sum(9) = (9/2)(2(100) + (9-1)(25))

= (9/2)(200 + 200) = 1800

2)

amount = 500(1.05)^10 = 814.45

- Math -
**michelle**, Sunday, August 14, 2011 at 1:54pmwhat is the arithmetic oe 3,5,7,9,and 11

- Math -
**cathyj**, Sunday, March 25, 2012 at 8:00pmMary has been working at the university for 25 years, with an excellent record of service. As a result, the board wants to reward her with a bonus to her retirement package. They are offering her $75,000 a year for 20 years, starting one year from her retirement date and each year for 19 years after that date. Mary would prefer a one-time payment the day after she retires. What would this amount be if the appropriate interest rate is 7%?

**Answer this Question**

**Related Questions**

Math - Can you please explain step by step on how to do each of these two ...

Math - Can you please explain step by step on how to do each of these two ...

math - The lower leg of a right triangle is 8 cm in length. Calculate the other ...

Quick math help - In which step below does a mistake first appear in simplifying...

8th grade - I am having trouble with these kinds of problems and I ask my ...

Algebra help - f(x)=x^3-4x^2-x+4 How do I find the x-intercept for this? This is...

Math - Tell whether each sequence is arithmetic. Justify your answer. If the ...

arithmetic - Tell whether the sequence is arithmetic. If the sequence is ...

CHEM - The decomposition of nitrogen dioxide 2NO2-->2NO+O2 occurs in a two-...

8 grade math - Can somebody please help me I don't understand this problem.? ...