Make both sides powers of 3:

Make both sides powers of 2:

X=58 the exterior angle is “D” 60degrees
By rounding to the nearest one it means round to the nearest whole number. So basically, the number 0.7414 rounded to the nearest whole number would be 1.
Check the picture below.
make sure your calculator is in Degree mode.
ANSWER

EXPLANATION
The given matrix is a 4 by 4 matrix.
We want to find

This is the entry in Row 1 Column 4.
We trace row 1 Column 4 and identify the entry in their intersection.
This entry is 5
