What is the value of 4.2(46 - 65)

A. -798
B. -79.8
C. 79.8
D. 798

-79.8

To calculate this, first subtract 65 from 46:
46 - 65 = -19

Then, multiply 4.2 by -19:
4.2(-19) = -79.8

Therefore, the value of 4.2(46 - 65) is -79.8.

The answer is B. -79.8.