Answer:D
Step-by-step explanation:
you plug 4 in for x
f(4)=4^2+2(4)-3
=16+8-3
=24-3
=21
Conic sections are defined using a directrix (<span>a fixed line used in describing a curve or surface) and a focus, and those are: parabola, ellipse, and hyperbola. </span>
Answer:
C.
Step-by-step explanation:
"Two more than three times a number is seven"
Add 2 to 3n and set it equal to 7.
2.25 can be written as 9/4 or 2 1/4
You can find some videos that could help you understand on Khan academy you just have to type in the same question that you asked here.
