The height y (in feet) of a ball thrown by a child is : y= -1/16x^+6x+5 how high is the ball when it leaves the child hand? What is the maximum height of the ball? How far from the child does the ball strike the ground?

The long jump record, in feet, at a particular school can be modeled by f(x) = 19.6 + 2.5ln(x + 1) where x is the number of years since records began to be kept at the school. what is the record for the long jump 11 years after record started being kept? round your answer to the nearest tenth.

Measures of the angle of r, 31 s (x+4) t (3x+9)

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?