What of the following is an arithmetic sequence?
a. 800, 20p, 50,
b. 1, 3, 9, 27,
c. 1, 0, 1, 0, 1, 0,
d. 10, 7, 4, 1, -2,

Me figure out the process to determine x you appreciate it : )

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Mr. and mrs. wallace have decided to buy a car for $21,600. they finance $15,000 of it with a 5-year auto loan at 2.9% arp. what will be their monthly payment be? a. $268.20 b. $268.86 c. $269.54 d. $387.16 i need !