Modeling with Sequences and Series — Unit test Answers

Dreya is saving money to purchase a $900 computer, and she saves $10 the first week. Each week after that, she saves $3 more than the previous week, except in the last week, when she reaches $900. To have a final sum of exactly $900, how much money does Dreya need to save in her final week of saving?

Which statement is true?

What is the sum of the first 34 numbers in the series below?147 + 130 + 113 + 96 + . . .

What is the sum of ?

The amount of interest earned on an account can be represented using the recursive formula . If , and n represents the number of months the money is invested, what is the balance at the end of each month for the first three months?

Modern Electronics offers a one-year monthly installment plan for a big screen TV. The payment for the first month is $62, and then it increases by 4% each month for the rest of the year. Which expression can be used to find the total amount paid in the first 12 months?

The expression represents the sum of the first 200 multiples of 3. What is the sum of the first 200 multiples of 3?

An arithmetic series contains 14 numbers. The first number is 12. The last number is 38. What is the sum of the series?

A furniture store offers a one-year monthly installment plan for a set of living room furniture. The payment for the first month is $65, and then it increases by 5% each month for the rest of the year. How much money is paid after 12 months? Round your answer to the nearest dollar.

Which of the following can be used to evaluate the series ?

Stu takes a job with a starting salary of $65,000 for the first year. He earns a 2% increase each year. To the nearest dollar, how much does Stu make over the first five years?

A sequence can be defined by the explicit formula . Which recursive formula represents the same sequence of numbers?

A sequence is defined by the explicit formula . Which recursive formula represents the same sequence of numbers?

Which geometric series converges?

Which recursive formula describes the sequence below?5, 13, 29, 61, 125, ...