To find the total number of crayons the teacher bought by purchasing 4 packs of crayons, where each pack contains 24 crayons, we can use multiplication or repeated addition.
The two equations that correctly represent the total number of crayons the teacher bought are:
C. \( 24 + 24 + 24 + 24 = 96 \)
D. \( 4 \times 24 = 96 \)
So, the correct answers are C and D.