4. four friends went on a trip to mexico. they rented a car for eight days which cost
them $55 per day. they also paid for gasoline, which cost $25 per day, and rented
a hotel room at $129 per day. the four friends split the cost of all these expenses.
how much did each friend spend?

Explanation:

So, I know a lot of people won't do it this way, but this is how I would do it.

First, multiply each expense by eight (eight for the eight days)

$55 x 8 = 440

$25 x 8 = 200

$129 x 8 = 1032

Next, take the three answers and add them together:

440 + 200 + 1032 = 1672

Lastly, divide 1672 by four (four for the four friends)

1672/4 = 418

There you go! Here is your answer. Each friend paid $418

Hope I helped! :D

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Explanation:

Draw a vertical line through -3 on the x axis

This vertical line crosses the diagonal line at point P as shown in the diagram below.

Draw a horizontal line from point P to the y axis to get to y = -6

This shows that (x,y) = (-3,-6) is a point on the diagonal line.