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To save for retirement, Karla Harby put $675 each month into an ordinary annuity for 19 years. Interest was compounded monthly. At the end of the 19 years, the annuity was worth $271,800.
What annual interest rate did she receive______?
(Round to two decimal places as needed.)
An investment of 53,000 was made by a business club. The investment was split into three parts and lasted for one year. The first part of the investment earned8% interest, the second 6%, and the third 9%. Total interest from the investments was $4050.
The interest from the first investment was 4 times the interest from the second. Find the amounts of the three parts of the investment.
What is the amount of the first part of theinvestment? $____
What is the amount of the second part of theinvestment? $____
What is the amount of the third part of theinvestment? $____
Assume that a demand equation is given by q=7000−100p.
Find the marginal revenue for the given production levels (values of q). (Hint: Solve the demand equation for p and use R(q)=qp.)
a. The marginal revenue at 2000 units is _____. (Simplify youranswer.)
b. The marginal revenue at 3500 units is _____. (Simplify youranswer.)
c. The marginal revenue at 6500 units is ______. (Simplify youranswer.)
5X+6Y=4
10X+2Y=8
I need to find the ordered pair. Using Elimination method
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