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Use a calculator to find the correlation coefficient of the data set

The correlation coefficient of the data set is -0.985

Step-by-step explanation:

We are supposed to find the correlation coefficient of the given data

x                  y

5                 19

7                  17

10                16

15                12

19                 7

Formula:  

Using calculator

r =-0.985

So, Option C is true

Hence the correlation coefficient of the data set is -0.985

$15.40 per mile

step-by-step explanation:

you have to round up to 4 because 6 is over 5 so you have to round the 3 up to 4

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.