Answer:
probably the 2.38 seconds answer
Step-by-step explanation:
start by setting the entire equation equal to 8, since h(t) is the height and 8m is the height we are looking at right now.

subtract 8 from both sides to get: 
use the Quadratic equation to find the time, the negative answer does not count.
when you do the quadratic equation you get 
In decimal form that's about 2.38 and 0.42 You'd probably go with the 2.38 seconds because the ball starts at 0 seconds, so the lower number is probably to close to the start point.
Answer:
---- equation 1
---- equation 2
A microscope costs S51 and a dissection kit costs S17
Step-by-step explanation:
Given
Represent microscope with M and Dissection kits with D
Cost:


Required
Represent as an equation:
To do this, we represent the equation in terms of cost and quantity
In terms of cost, we have:
---- equation 1
and
---- equation 2
Substitute 3D for M in equation 1



Divide both sides by 134


Substitute 17 for D in 


Hence:
<em>A microscope costs S51 and a dissection kit costs S17</em>
Answer:
58
Step-by-step explanation:
That is the surface area hope tht helps
1. The correct answer for the problem shown above is the equation of the last option (Option D), which is shown below:
D. y=-3(x+3)^2+6
3. To verify that this is the equation of the parabola, you can give values to the variable "x" and plot each point obtained. When you do this, you obtain the graph attached.
2. Therefore, as you can see in the graph attached the vertices area (-3,6), so you can conclude that the correct answer is the option mentioned before:
D. y=-3(x+3)^2+6