It stretches the graph parallel to the y axis by a factor a. This has the effect of making the parabola more narrow.
Answer:
N(-2) = 
-5 this is also equal to n=2.5
Step-by-step explanation:
multiply both sides by 2
-4n = -2n-5
add 2n to both sides
-2n = -5
divide both sides by -2
n=2.5
Ten as each term is the coefficient and the variables if one is listed for example 2x is one term. For ex as is -4z2x and the 3 etc.
The answer of this question is that the total price is $191.45
F(3)=-18
You just replace x for three for your equation and then use Ofer of operations to solve it.
So f(3)= 21+ 2(3)-5(3)^2
The exponent goes first: f(3)= 21+ 2(3)-5(9)
Next is multiplication: f(3)= 21+ 6-45
Now add: f(3)= 27-45
Finally subtract: f(3)= -18
Hope this helps!
