PLEASE HELP ITS 58 POINTS:(! Tasty Tacos offers delicious steak, chicken, or fish tacos served in your choice of a flour or corn tortilla. The mapping diagram below shows the number of tacos that previous guests have ordered and the total cost of their order

Number of tacos ordered. Total Cost

3 4.25
4 5.60
5 10
6 12.25

Does this represent a function why or why not?
State the domain and range.

I do not think that this is a function, but I am not 100% sure

Step-by-step explanation:

Washing cars= 4 hours

Walking dogs= 10 hours

Step-by-step explanation:

You want to start by creating equations. So one thing we know is that he makes $9 an hour washing cars(x) and $8 walking dogs(y).

$9x+$8y=$116

The second Equation is based off of the hours worked. We know that he worked 6 hours more walking the dogs than he did washing cars, so we can take x(being the washing hours) and add 6 to it to equal y (the number of dog hours).

y=x+6

Now You plug what y equals into the first equation to solve for x.

9x+8(x+6)=116     Next distribute the 8 to each term.

9x+8(x)+8(6)=116

9x+8x+48=116     Add the like terms together (9x+8x)

17x+48=116         Subtract the 48 from both sides

     -48  -48

17x=68             Now divide by 17 on both sides.

17    17

x=4                 Finally we can take x and plug it back in to one of the equations in order to solve for y. I'm going to choose the second equation.

y=(4)+6

y=10