200 students in a high school senior class are surveyed about what majors they intend to declare in college.
Of the 200 students, 80 plan to major in mathematics, 100 plan to major in computer science, and 30 plan
to pursue a double major in mathematics and computer science. Using this information, answer each of the
following questions.

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

How do you summarize data in a two-way frequency table?

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days