I am an odd number. my digits add up to 7. i am bigger than 50 and smaller than 100.who am i?

61

Step-by-step explanation:

i hope this is correct lol

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.

it would be 6xy and -16xy.