Please solve the question and show working using the Pythagorean theorem.​

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Factor this polynomial completely x^2-64

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000