Let me reword my last question which of the following is an arithmetic sequence (select all that apply) 1.4,8,12,16,20
2.1,3,7,15,31
3.2,9,16,23,30
4.1,1,2,3,5,8
5.1,2,4,8,16
6.13,9,5,1,-3
7.11,17,23,30,36
8.29,20,11,2
9.3,9,27,81
10.0,1,3,6
11.11,15,19,23

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

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?