Unit Test — Unit test Answers

The manager of a store is stacking boxes for a display. There are 18 boxes on the bottom row. Each successive row has one less box than the previous row. The expression represents the total number of boxes in the display for the first 15 rows. How many boxes are in the display?

What are the values of r and a1 for ?

What is the approximate value of ? Round your answer to the nearest hundredth.

What is sum of the geometric series ?

What is the value of the arithmetic series below?

The sum of an 84-number series is –7,980. What is the sum of the first and last numbers?

A botanist measures a plant, in feet, at the beginning of each month and notices that the measurements form a geometric sequence, as shown below.2, 2.2, 2.42, 2.662, ...If the first measurement was taken on September 1, about how tall was the plant three months before, on June 1, assuming the same growth pattern?

The total number of miles Jeremy walked on a hike can be represented by using the formula . If and n represents the total number of hours walked, what is the total distance Jeremy walked at the end of each of the first three hours?

Which of the following represents the sum of the series below?