Leah is buying curtains for her bedroom window. she wants the curtains to hang from the top of the window to the floor. the window is 4 feet high. the bottom of the window is two and one half feet above the floor. how many inches long should leah's curtain be?

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

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.