The height y (in feet) of a ball thrown by a child is ; y= -1/12x^2 + 6x +3

Where x is the horizontal distance in feet from the point at which the ball is thrown

a) How high is the ball when it leaves the childs hand? feet

b) What is the maximum height of a ball? ___ feet

c) How far from the child does the ball strike the ground? ___ feet

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

8.74 rounded to the nearest whole number

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work