Which one of the following statements expresses a true proportion?

A. 7:9 = 8:9
B. 54:9 = 6:3
C. 2:1 = 1:2
D. 3:4 = 9:12

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

What is the rate for one gallon of gasoline

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left