Answer:
The vertex is (2,1)
Step-by-step explanation:
ƒ(x) = –x^2 + 4x – 3
Factor out the negative
= -(x^2 -4x+3)
Factor
What 2 numbers multiply to +3 and add to -4
-3*-1 = 3
-3+-1 = -4
f(x) = -( x-3)(x-1)
Find the zeros
0 = -( x-3)(x-1)
0 = x-3 0 = x-1
x=3 x=1
The x value of the vertex is 1/2 way between the two zeros
(3+1)/2 = 4/2 =2
To find the y value, substitute x=2 in
f(2) = -( 2-3)(2-1)
=-(-1)(1) = 1
The vertex is (2,1)
Answer:
C = 25 + 3n
Step-by-step explanation:
Andre has a summer job selling magazine subscriptions.
We are told that:
Andy earns $25 per week plus $3 for every subscription he sells.
Let us represent
C = Total amount of money he makes this week
n = the number of magazine subscriptions Andre sells this week.
Hence, Our Algebraic expression =
C = $25 + $3 × n
C = 25 + 3n
Answer:
how should I help you with
- 3 and 2 are the answers because at each of those points the graph line is rising.
Answer:
If we multiply by cross we got:
We can divide both sides of the last equation by 
and we got:
And if we apply arcsin in both sides we got:
And the best solution would be:
C) pi/2
Step-by-step explanation:
For this case we want to solve the following equation:
And we know that by definition 
And replacing we got:
If we multiply by cross we got:
We can divide both sides of the last equation by and we got:
And if we apply arcsin in both sides we got:
And the best solution would be:
C) pi/2
