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1) ¿Cuántos estudiantes pesan 100 lb?
Peso de Estudiantes
5
6
7
8
9
100 110 120 130 140 150
Peso en lb
a) O 100
b) O 2
c) O 7
d) 120
e) Ninguno de los anteriores

You have to look at the diagram: the bar labeled as "100" tells you how many students weigth 100lbs.

Specifically, the "100" bar reached the height of 2, so 2 students weight 100 lbs.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.