What is the number 81 as a percentage?

Drag the tiles to the table. the tiles can be used more than once. nd g(x) = 2x + 5 model a similar situation. find the values of f(x) and g(x) let's say that the functions f(x for the given values of x. fix)=5(4) * g(x) = 2x+5

Which of the choices shown could be used to prove that aacp=abcp ?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?