A golf ball is hit in not the air represented by the equation y= -3x^2+18x+45. The maximum height the ball will reach is feet

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

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?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?