During a volleyball game, a serve was made from one end of the court to the other. The equation h = -16t2 + 30t+5 describes the height (in feet) of the ball t seconds after it
was thrown. Approximately how high did the ball go into the air?
a) 10.2 ft
b) 11.5 ft
c) 13.9 ft
d) 18.3ft
e)19.1ft

He expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. if the length is fraction 2 over 3 unit and the width is fraction 1 over 3 unit, what is the perimeter of the rectangle in units? fraction 2 over 3 unit 1 unit 1fraction 2 over 3 units 2 units

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?