Answer 6 is and exponential, but I don’t know what 7 is, sorry
B. 42 degrees
Angle ABC is an inscribed angle so u have to divide Arc AC by 2 to find angle ABC.
84degrees divided by 2 is 42 degrees.
The answer is 35
Explanation: because 42 divided by 6 is 7 and 7 times 5 is 35
X^3 + 7*x^2 + -16*x-112
=(x + 4)*(x + 7)*(x - 4)
6 3/4 I think is a possible answer