1.) What is the arithmetic mean of 14 and 22?

a. 17
b. 18
c. 19
d. 20

2.) Is it the sum of the terms of an arithmetic sequence

a. Geometric mean
b. Geometric series
c. Arithmetic mean
d. Arithmetic series

3.) What is the next term in the geometric sequence 5‚ -10‚ 20?

a. -40
b. -30
c. -20
d. -15

4.) which of the following is true about the distances among P‚ Q‚ and R if Q is the midpoint of segment PR

a. PQ = QR
b. QR = PR
c. PQPR
d. 2(PR) = PQ + QR​