Answer:
false
Step-by-step explanation:
f is not a function because you can see that two of the points are (2,5) and (2,2). A function can only have one corresponding y-coordinate for every x-coordinate and since this is not the case here, f is not a function.
Answer:
34.47
Step-by-step explanation:
multiply $11.49 by 3
The zero of the function is for x = 0. Put the value of x to the equation
y = -7x + 8:
<em>subtract 8 from both sides</em>
<em>divide both sides by (-7)</em>

As there is no graph attached so you have to done it yourself, Steps provided below for making it easier.
- Observe the graph, whether it's a barchart/histogram/Piechart .
- Then find 270 in the graph.
- Check respective y co-ordinates .
Done!You found the answer