. During a school carnival, the student council booth has a quarter toss. A quarter is tossed
in cups placed at varying distances to earn
points. The more points earned, the bigger the
prize won. The table shows the results from
the booth within the first hour.
Point Value
Number of
Successful
Participants
1
20
2
12
3
8
5
5
10
3
What is the experimental probability that a
participant receives 5 or 10 points on a toss?
5/48 1/16 5/7 1/16

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.

answer is a.

13.268

hope you get it right.