x(angle1)+(3x-5)(angle 2)=143(sum of both angles).
x+3x-5=143
combine like terms: 4x-5=143
add 5 to both sides: 4x=148
divide both sides by 4: x=37
substitute for x: angle 1=37, angle 2= 106
The mood of the passage is the one that follows:
B- surprise and joy.
Mrs. Lacey smiles at the other character, and it is clear she's being true, since right after it she shakes her head in order to show her inability to understand the other character's action of bringing an ant with him. Mrs. Lacey is not angry or upset, but feeling in the same way mothers do when their kids do weird things they are not able to understand due to generation gap, to their kids' immaturity, among other things.
