FIRST ONE TO ANSWER CORRECTLY GETS A BRAINLIEST PRE-CALC HELP

C

Step-by-step explanation:

When you're writing a function from a table use the equation:

y = mx +b

We look at our the difference in each in the table.

x goes up by 1 each time, and the combines change of y is $1.50+$2 each time for $3.50 total. That's a ration of 3.50/1 or just $3.50. This is our m value.

Now we have:

y = $3.50x +b

Now we find our b value by plugging in our values from the table.

x = 1 and y = $6

$6 = $3.50(1) + b

$6 = $3.50 + b subtract $3.50 from each side

$6 - $3.50 = $3.50 - $3.50 + b

$6 - $3.50 = b

$2.50 = b

So m = $3.50 and b = $2.50 so our equation is

y = $3.50x + $2.50

The answer is C

4200/6 = 700 not the answer 
4200/5 = 840 is the answer 
but the bridge measures 1 2 3 4 5 6 so you are trying to say that it should be 6 right but it is 5 
i.e. 1 unit is 840 
you see the scale that is 1 2 3 4 5 6 
840feet is distance between two units i.e. from 1 to 2 its 840, from 2 to 3 its 840, from 3 to 4 its 840, from 4 to 5 its 840 and from 5 to 6 its 840 so count how much 840's have come yeh thats 5... 
So 5 * 840 = 4200..or 840 + 840 + 840 + 840 + 840 = 4200 .. you got that