Question 8 simplify 4a 2 - 3a - 4 1. 7a - 7 2. a - 2 3. a 6 4. 6a - 2

The nth term of a sequence in 2n-1 the nth term of a different sequence is 3n+1 work out 3 numbers that are in bothe sequences and are between 20 and 40

Me i’m stuck on all these questions besides the two bottom ones

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?