Two groups collected litter along the side of the road it takes each group 5 minuites to clean up a 200 yard section how long do
1 answer:
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Let 
Ben's age
Let
Daniel's age
We know:
and
Plug the value of
into the second equation:
Since Ben is 20 years older than Daniel, Ben is 13+20=33 years old.
Let
We know:
and
Plug the value of
Since Ben is 20 years older than Daniel, Ben is 13+20=33 years old.
Answer:
3 seconds
Step-by-step explanation:
To find the highest point, we want to find the vertex of the parabola. Since the function will be negative, the vertex will represent the highest point.
To find the vertex we want this equation in vertex form:
y=a(x−h)2+k
and the vertex will be (h,k)
We can expand the equation h(x)=-(x+1)(x-7) to be:
To get the vertex form we need to complete the square.
The vertex form is :
so our vertex is (3,16)
This means the highest point will be 16 when x = 3
