Assume that it costs apple approximately
c(x) = 28,900 + 100x + 0.01x2
dollars to manufacture x 32gb ipods in a day.†

how many ipods should be manufactured in order to minimize average cost?
? ?
what is the resulting average cost of an ipod?
?

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