It is the right answer........
-1^3 - -1^2 +1= -1. ...........
Answer: 7 3/10
seven as a whole number, and .3 equals to 3/10 when converted
1.

2.

3. -7/30
4. i believe it is the communitive of multiplication , but not 100% sure
In this case the chords are congruent.
x = 7 + 7 = 14