Answer:
a and c I think if I'm wrong I will try again
Y=x^2
substitute the values into the original equation
0=4^2
0=16
No it does not satisfy the equation because 0 does not equal to 16
The factor of 11 is going to be 77 because you have to stay in between 70 to 80
and 7 times 11 is 77. It also has to be a number in the 11 timetables. It can't be 88 because we can't cross 80 so the factor is going to be 77.
Hope it helps
Half of 5.00 is 2.50, I suppose the 50 is the X in the situation, I don't have a graph to work on sorry I tried to help as much as I can.