Answer:
{-3, -4}
Step-by-step explanation:
hope it will help you☺
When F(x) = 9x^2 + 6, evaluate f(-4)
1 answer:
You might be interested in
Answer:
a. The function is increasing for all real values of x where x < –4.
Step-by-step explanation:
Let me help you, I have answered this question once in Brainly as well
Given the factored form of the function:
f(x) = -(x + 6)(x+2)
<=> f(x) =
We will convert to vertex form
Let analyse other possible answers:
<u>a. The function is increasing for all real values of x where x < –4.</u>
True, because the parameter a = - 1 so the graph open down all over its domain
<u>b. The function is increasing for all real values of x where –6 < x < –2.</u>
Wrong, the function decrease in the interval from –4.< x < -2
<u>c. The function is decreasing for all real values of x where x < –6 and where x > –2.</u>
Wrong, the function increase in the interval from -6 < x < -4
<u>d. The function is decreasing for all real values of x where x < –4.</u>
Wrong, The function is increasing for all real values of x where x < –4.
The vendor has to sell 88 gingerbread houses to earn a profit of $665.60 and there is no chance that the vendor will earn $1500.
Given an equation showing profits of A Christmas vendor as
P=-0.1+30g-1200.
We have to find the number of gingerbread houses that the vendor needs to sell in order to earn profit of $665.60 and $1500.
To find the number of gingerbread houses we have to put P=665.60 in the equation given which shows the profit earned by vendor.
665.60=-0.1+30g-1200
0.1-30g+1200+665.60=0
0.1-30g+1865.60=0
Divide the above equation by 0.1.
-300g+18656=0
Solving for g we get,
g=[300±]/2*1
g=[300±
g=[300±]/2
g=(300±124)/2
g=(300+124)/2 , g=(300-124)/2
g=424/2, g=176/2
g=212,88
Because 212 is much greater than 88 so vendor prefers to choose selling of 88 gingerbread houses.
Put the value of P=1500 in equation P=-0.1+30g-1200.
-0.1+30g-1200=1500
0.1-30g+1500+1200=0
0.1-30g+2700=0
Dividing equation by 0.1.
-300g+27000=0
Solving the equation for finding value of g.
g=[300±]/2*1
=[300±
=[300±]/2
Because comes out with an imaginary number so it cannot be solved for the number of gingerbread houses.
Hence the vendor has to sell 88 gingerbread houses to earn a profit of $665.60 and there is no chance that the vendor will earn $1500.
Learn more about equation at brainly.com/question/2972832
#SPJ1