City P has a temperature of −4 °F. City Q has a temperature of −8 °F. Use the number line shown to answer the questions:

Number line from negative 8 to positive 8 in increments of 1 is shown.

Part A: Write an inequality to compare the temperatures of the two cities. (3 points)

Part B: Explain what the inequality means in relation to the positions of these numbers on the number line. (4 points)

Part C: Use the number line to explain which city is warmer. (3 points)

Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to