Answer: Option D

Step-by-step explanation:
Note that the projectile height as a function of time is given by the quadratic equation

To find the maximum height of the projectile we must find the maximum value of the quadratic function.
By definition the maximum value of a quadratic equation of the form
is located on the vertex of the parabola:

Where 
In this case the equation is: 
Then

So:


Answer:
f(5) = 21
Step-by-step explanation:
Step 1: Define
f(x) = 6 + 3x
f(5) is x = 5
Step 2: Substitute and Evaluate
f(5) = 6 + 3(5)
f(5) = 6 + 15
f(5) = 21
Answer:
the answer is negative
Step-by-step explanation:
Answer:
p = 10
Step-by-step explanation:
20 x 50 = 100p
1000/100 = 100p/100
10 = p
Answer:
At the 3rd day 160 students caught flu.
Step-by-step explanation:
Consider the provided model P = − t ² + 13t + 130 where 1 ≤ t ≤ 6
The total number of students is represents by P.
We need to find the day that 160 students had the flu.
Substitute the value of P=160 in above formula.






Hence the value of t=10 or t=3
But it is given that 1 ≤ t ≤ 6, Therefore select t=3
Hence, at the 3rd day 160 students caught flu.