What factors contributed to a new reality in which people are "always on"? A. The decrease in the number of pay phones for public use
B. The number of homes that have landline connections
C. The expense and trouble of having a desktop computer
D. The availability and affordability of wireless services

answer; top-down processing;

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