Plz help, explain me the method
Topic: Simultaneous equations
Class 9 ICSE​

The equation respenting the left table is

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?