Find the value of the expression if x=9 and y=1 Xy^2/-5

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

What is the value of x in the diagram below?