Alain throws a stone off a bridge into a river below.
The stone's height (in meters above the water), x seconds after Alain threw it, is modeled by:
h(x) = -5x^2+ 10x + 15
How many seconds after being thrown will the stone hit the water?

Given the following statements, which is the best

The graph shown below expresses a radical function that can be written in the form f(x)=a(x+k)1/n+c what does the graph tell you about the value of n in this function

The sum of two numbers is 58. the first number is 8 less than half the second number. let  c  represent the first number. let  drepresent the second number. which statements about solving for the two numbers are true? check all that apply. the equation    represents the sum of the two numbers. the equation    represents the sentence “the first number is 8 less than half the second number.”the equation    represents the relationship between the two numbers. the equation    represents the sum of the two numbers. the number  d  is 14.the number  c  is 44.the number  c  is 14.the number  d  is 44.