an architect notices that the scale on a blueprint he is using has been torn off. however, he sees that a 21.6-foot wall that has been built is 6 inches long on the blueprint. what is the scale for this blueprint?

a. 1 in. : 3.6 ft.
b. 1 in. : 6.3 ft.
c. 1 in. : 36 ft.
d. 1 in. : 63 ft.

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?