Luis solves the following system of equations by elimination. what is the value of s in the solution of the system? 11 33

Pls! does anybody know a shortcut for answering these types of questions in the future?

Don't know how to find x given these segment lengths

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25