1. In a stem-and-leaf plot showing test scores, an entry appears as `8 | 5`. The key for the plot is `8|5 = 85`. What is the value of this test score? ___
2. A stem-and-leaf plot displays the heights of plants in centimeters. An entry reads `16 | 4`. The key is `16|4 = 16.4`. What is the height represented by this entry?
3. A stem-and-leaf plot shows the value of collectible coins in dollars. One entry is `25 | 0`. The key is `25|0 = 250`. The value of this coin is ___ dollars.
4. A plot shows the lengths of several fish in inches. One row is `11 | 2, 9`. The key is `1|2 = 1.2`. What are the two lengths represented in this row?
5. The stem-and-leaf plot below shows daily temperatures. What is the lowest temperature recorded? Stem | Leaf 5 | 8, 9 6 | 1, 4, 7 7 | 0, 2 Key: 5|8 = 58
6. In a stem-and-leaf plot, if the number 82 is a data point, what is the leaf?
7. A data set of student ages includes 34, 39, 31, and 34. How should the leaves for the stem '3' be written in a correctly formatted stem-and-leaf plot?
8. The stem-and-leaf plot below shows quiz scores. What is the highest score recorded in the plot? Stem | Leaf 7 | 5 8 9 8 | 2 2 6 9 | 1 4 Key: 7 | 5 means 75 The highest score is ___.
9. Solve the system of equations using the elimination method: $4x + y = 10$ $x - y = 5$ The value of $x$ is ___.
10. What is the solution $(x, y)$ to the following system of equations? $x + 2y = 9$ $3x - 2y = 11$