100pts: abdullah averages 30 mph driving from houston to austin. what was his average speed on the return trip if the average speed for the whole trip was 40 mph? in your work, show that the answer will be the same regardless of the distance between the two cities.

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

where is the figure

a - base

b - exponent

so,

765238725478629038640962136509762139056074

step-by-step explanation:

64087235609746097215074621039754021037