138 because 92/4 equals 23 which is the miles per gallon, then you multiply that by 6<span />
How I understand from your writing next term is equal previous plus 3,
if 1st is -4, then next (second) should be -4+3= -1
I believe its $6.95 but i did that in my head so i might be wrong
I don't know if this helps but my calculator said 4.2189246e+21
