The art museum had a total of 224 visitors on tuesday. visitors older than 18 paid $12 for admission. visitors 18 years or younger paid $8 for admission. the museum collected a total of $2,520. the following system of equations models this scenario:
x + y = 224
12x + 8y = 2,520
how many visitors were 18 or younger?
a 42
b 56
c 182
d 194

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?