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Answer:</h2>
First of all let's write the slope-intercept form of the equation of a line, which is:
So we just need to find 
to solve this problem.
Moreover, this problem tells us that Amir drove from Jerusalem down to the lowest place on Earth, the Dead Sea, descending at a rate of 12 meters per minute. So this rate is the slope of the line, that is:
Negative slope because Amir is descending. So:
To find 
, we need to use the information that tells us that he was at sea level after 30 minutes of driving, so this can be written as the point 
. Therefore, substituting this point into our equation:
Finally, the equation of Amir's altitude relative to sea level (in meters) and time (in minutes) is:
Whose graph is shown bellow.
The answer is A as he has all of the quarters when he spends no time in the arcade
D is the best choice because y would be the total amount of money he would have to pay. X would be the amount of hours he uses the phone and the hourly fee is 23 so it would be 23x. the flat fee was 16 so you just add that on to the hourly fee. The whole equation should be y = 23x + 16
When you have ratios and some unknowns you can create complex fractions from them.Bring them to the same denominator and solve for X.
