Here is the equation:

You need to find f(3). To do that, substitute all the x's with 3:

The first thing you need to do is multiply 4 by 3. Multiply:

Here is your new equation:

To get your answer, you need to add 12 and 1. Add:

That means:

<em>If you have any questions, feel free to ask in the comments! :)</em>
Point slope equation:
y-y1=m(x-x1)
m=slope
So we simply plug in our given information:
x1=-8
y1=2
m=1/2
y-2=1/2(x-(-8)
2 minus signs next to each other make a positive
Final answer:
y-2=1/2(x+8)
Answer:
v=10.1
Step-by-step explanation:
v= 4.5 + at -------> equation 1
given
a=1.6
t=3.5
so we will plug in the value in equation 1
v = 4.5 + (1.6 x 3.5)
v = 4.5 + 5.6
v = 10.1
Answer: As the number of rides given by the taxi driver increased, the earnings of the taxi driver also increases.