If a, b, c are in A. P., and a², b²,c² are in H. P. (a ≠ b ≠ c) then: (A) a 2b, c are in G. P
(B) a, b, care in H. P
(C) a, b, -c/2 are in G. P.
(D) -a/2 , b, c are in GP
(More than one are correct, and please try to explain it)​

Select the correct answer from each drop down menu

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?