Answer:
Answer A is correct.
Step-by-step explanation:
Please note the difference beteen f(x+3) and f(3).
So f(x + 3) means, where you see x in the equation, you substitute x+3. (This is a recursive entry).
f(x)= 2x² - 3
f(x)= -3 + 2x²
f(x)= -3 + 2* (x+3)²
f(x)= -3 + 2* (x+3) * (x+3)
f(x)= -3 + 2* (x² + 3x + 3x + 9)
f(x)= -3 + 2* (x² + 6x + 9)
f(x)= -3 + 2x² + 12x + 18
f(x)= 2x² + 12x + 18 -3
f(x)= 2x² + 12x + 15
So answer A is the correct answer
Answer:
I hope to get a brainiest. Solution is in attached files. You can ask any question on it
Step-by-step explanation:
Horse = x = 1 head and 4 feet
Chicken =y = 1 head and 2 feet
Horse + chicken = x + y = 43 ( total heads)
Horse = 43 - y
4x + 2y = 122
4(43-y) + 2y = 122
Simplify:
172-4y + 2y = 122
Combine like terms
172-2y = 122
Subtract 172 from both sides
-2y = -50
Divide both sides by-2
Y = 25
X + y = 43
X + 25 = 43
X = 18
There are 18 horses and 25 chickens.
Answer:
y=3/2x-4
Step-by-step explanation:
3x-2y=8
-2y=-3x+8
y=3/2x-4
X -(1/2x) = 2
1/2x = 2
x = 4
(4) - y = 2
y = 2
