I need the answer please!

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

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?