An art teacher recorded whether the students in three of her classes prefer water color or oil painting. she plans to create a two-way table to analyze her results. which describes the variables she can use in the first row and first column to create her table? painting preference and total number of students painting preference and number of students in class 1 class number and painting preference class number and number who prefer oil

Painting preference and total number of students.

Step-by-step explanation:

For two way table we need to the data that will consider all the cases:

So, an art teacher should use the two variable painting preference and number of students as her first row and first column respectively.

Because these two things will consider both water color or oil painting under painting preference.

And all students of all three classes under number of students.

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.

t

step-by-step explanation:

ever thing time 1 is a multiply by 1 it get