You haven't supplied the "output value."
Supposing that the "output value" were 15, then F(x) = x + 7 = 15, and x = 8.
Answer: the first part of this question is C, the second part of this question is D
One snack packet will cost 80 cents
%change=100*(final-initial)/initial
%change=100(42.95-15.99)/15.99=168.61% (to nearest hundredth of a percent)
Okay, so you see that linear pair formed of angle 1,2,3
Now <1 = <5 and <3 = <6
So if 1 = 5, and 3 = 6
We also know that linear pair has 180 degrees and Hence proved angle 6,5 and 2 is equal to 180 degrees