1. Determine what type of relationship (linear , quadratic , exponential , or neither ) exists in each case. Justify your answer. First differences are : 32, 48, 72, 108 . Second differences are : 16. 24. 36. Ratios : 1.5. 1.5 . The type of relationship is exponential because the first differences .and the second differences are not the same .but the ratios are the same . First differences are : -8, -8. -8. -8 The type of relationship is linear because the first differences are the same C)