Which of the following phrases could represent the expression k - 4?
a. a number subtracted from four
b. four less a number
c. a number decreased by four
d. a number less than four

If you would like to know which phrases could represent the expression k - 4, you can do this using the following step:

a number ... k

A. 4 - k
B. k - 4
C. k - 4
D. 4 - k

The correct results would be B. and C.