Answer:
The first equation, f(x)=100(3/5)^(x), represent the graph
d₁ = -16t² + 122t
d₂ = -16t² + 84t
d = d₁ - d₂
d = -16t² + 122t - (-16t² + 84t)
d = 38t
After five seconds, t=5,
d = 38(5) = 190
Answer: 190 feet
Answer:

Step-by-step explanation:
Standard form:

Vertex form:

(h, k) is the vertex
x is the coordinate of the vertex
To find x use the formula:


a=1
b=-2
c=-6
Substitute:

Substitute x in equation:

h=1
k=-7
Substitute h, and k into the vertex formula:

Answer:
k= -1
Step-by-step explanation:
To find k, use the points and the m =-7 in the slope formula:

Answer:
11
Step-by-step explanation:
10+1=11
Hope that helps ;)