Parking is not allowed a. within 30 feet of a rural mail box on a state highway between 7 a. m. and 5 p. m. b. by curbs painted yellow or where "no parking" signs are posted. c. within 50 feet of any flashing signal, stop sign or traffic signal. d. all of the above

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

2nd one in the first row is correct