Aresearcher studying the most common teacher opinions on student lunch room behavior arranges the opinions in four categories and writes a report to present the descriptive data to the school board. for this study, the researcher is analyzing data by using measures.
a. experimental
b. qualitative
c. quantitative
d. naturalistic

B. qualitative.

Explanation:

For this study, the researcher is analyzing data by using qualitative measures!

if triangle abc is congruent to triangle def, their interior angles are congruent, because congruent parts of congruent triangles are congruent (cpctc).

that means ∠d is congruent to ∠a; ∠d is equal to 8x - 2.

interior angles of all triangles add to equal 180 degrees, so you can set the sum of these interior angle values equal to 180 and solve for x.

180 = (8x - 2) + 22 + 72

180 = 8x - 2 + 22 + 72

180 = 8x + 92

88 = 8x

11 = x

x = 11