Area = 4x(2x + 3) = 8x2 + 12x
Perimeter = 2(2x + 3 + 4x) = 12x + 6
Hello!
In a function, each input has only one output. In A, three has two outputs, 4 and 5, so A is not a function.
In B, you can use something called the vertical line test to see if each x value has one y value as an output. You move an imaginary vertical line across the graph, and if it intersects with two points it is not a function. If we do this on our graph, it will not intersect two points. Therefore, B is a function.
In C, we can see that each input has one output, or there are all different inputs, so C is a function.
For D we can use that vertical line test again. It intersects both the points (-1,1) and (-1,6) so D is not a function
Our final answers are B and C.
I hope this helps!
Answer:
Step-by-step explanation:
A truck drove 229.77 miles on 11.1 gallons of gas.
<u>Find the mileage per gallon:</u>
<u>Find the distance can be driven on full tank:</u>
- 20.7 * 16.8 = 347.76 miles
She will pay $1.50 for the hairbrush and her mum paid $1.50 as well
