The height of an item falling can be modeling by h^t=-16t^2+h^o. Where h^o is the initial height in feet, and h^t is the height in feet at time t in seconds. If I drop a cup at a height of 18.9 feet, how long will it take the item to hit the ground A. 2.09
B.1.09
C.1.19
D.0.09​

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?