I need help in a minute please

31.4 im pretty sure

Step-by-step explanation:

Option C and Option D are correct
The idea is this

x.y = x×y = xy

For option C... The expression has a value equal to twice 4 subtracted from 6.

If we subtract 4 from 6 we have 2. The twice our answer equals 2×2=4

For option D . The expression has a value that is twice as much as 6 minus 4.

6 minus 4 gives 2
So twice as much as what I have above is equivalent to 2×2=4

Am sure the answer and reason is quite evident now.. .

Hope this helped