Which arrangement shows 31/8, 3.7, 3 and 3/4 and 3.89 in order from least to greatest?

a. 3.7,3/3/4, 31/8, 3.89
b. 3.89, 3/3/4/,31/8,3.7
c. 3.7, 3/3/4, 3.89,31/8
d. 31/8, 3.7, 3/3/4, 3.89

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.