The Mississippi River is the second longest river in the United States, second only to the Missouri River. The Mississippi River is about $\frac{23}{25}$ the length of the Missouri River. If the Missouri River is 2,540 miles long. how long is the Mississippi River?

The Guadalupe River is $2.56 \times 10^{2}$ miles long. The Amazon River is $4.096 \times 10^{3}$ miles long. How many times longer is the Amazon River than the Guadalupe River?

A zip line is constructed across a valley, as shown in the diagram. What is the width w of the valley?

The Missouri River is the longest river in the United States. The Mississippi River is $200$ miles shorter than the Missouri River. If the length of the Missouri River is $r$ miles, express the length of the Mississippi River as an algebraic expression in $r$.

In a review of Spoon River Anthology, Carl Sandburg wrote, "The people whose faces look out from the pages of the book are people of life itself, each trait of them as plain or as mysterious as in the old home valley where the writer came from." Do you think his remark accurately describes Lucinda Matlock, as she is characterized in the poem? Explain.

There were three towns in the valley. The population of Brenton was $11,460$. The population of Elton was $9420$. The population of Jennings was $8916$. What was the total population of the three towns in the valley?

General Tsao stood $2$ feet back from the edge of a vertical cliff overlooking the valley below. By holding his staff vertically $2$ feet in front of him, he could see that the far bank of the river aligned with the point $1$ foot below eye level along his staff and the near bank aligned with the point $3$ feet below eye level along the staff. By lowering a rope over the cliff face, he determined that his eyes were $45$ feet above the level floor of the valley. How did the general determine the width of the river to know if his army could safely cross to its opposite side?

Locate Rubicon River, Dacia, Mesopotamia, Sinai Peninsula, Rhine River, Danube River.

Use the Pine Valley database to answer the following questions: a. How many work centers does Pine Valley have? b. Where are they located?

For each question, write on a separate sheet of paper the letter of the correct answer.

What is the name for a submerged river valley mouth that forms a bay where salt and fresh water mix?

F. estuary

G. fiord

H. atoll

I. lagoon

On a separate sheet of paper, answer the questions below. Make sure you read carefully and answer all parts of the questions. How did major river valley civilizations influence the development of the classical civilizations?

Sue Ann Apolinar hired a guide through Arkansas Valley Adventures, LLC, for a rafting excursion on the Arkansas River. At the outfitter’s office, Apolinar signed a release that detailed potential hazards and risks, including “overturning,” “unpredictable currents,” “obstacles” in the water, and “drowning.” The release clearly stated that her signature discharged Arkansas Valley from liability for all claims arising in connection with the trip. On the river, while attempting to maneuver around a rapid, the raft capsized. The current swept Apolinar into a logjam where, despite eorts to save her, she drowned. Her son, Jesus Espinoza, Jr., Filed a suit in a federal district court against the rafting company, alleging negligence. What are the arguments for and against enforcing the release that Apolinar signed? Discuss. [Espinoza v. Arkansas Valley Adventures, LLC, 809 F.3d 1150 (10th Cir. 2016)] (See Legality.)

What is the Spanish word for valley?

The Nile River is 4160 miles long. The Amazon River is

$$\frac{25}{26}$$

as long. How long is the Amazon River?