a. Imagine you are driving on the highway to the ball park at a constant speed o

Question

a. Imagine you are driving on the highway to the ball park at a constant speed of 50 miles per hour (mph). What two quantities could you use to determine the varying number of miles you are from the exit to the ball park? (Draw a picture!) 2 the total number of miles from your house to the exit the total number of hours you drove on the highway the varying number of miles you have already driven on the highway the total number of miles you must drive on the highway to your exit b. You are driving down the highway at a constant speed of 50 miles per hour (mph) on the way to the ball park. Suppose k represents the varying number of hours clapsed since you walked out your front door, j represents the varying number of hours elapsed since you got on the highway, z represents the total number of hours it took to reach the ballpark, and y represents the total number of hours you have driven on the highway when you reach the ball park. Which of the following statements represents the varying distance you have driven on the highway? 50k 050V 050j 50z c. You have been driving down the highway for j hours at a constant speed of 50 miles per hour (mph) on the way to the ball park. You must drive you reach the bal parks exit. Which of the following expressions represents the vary ing number of miles you have left to drive on the higaoe you reach the exit for the ball park? 23.7-50a 23.7-50 23.7+50y -23.7 + 50z 23.7+50k 023.7-50y 23.7+50j 23.7 -50k

Explanation / Answer

s = 50 mph

Total distance = distance driven + distance yet to be driven

So,
D = d1 + d2

So, we can use options
C and D

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50* time driven on highway
So, 50*j
Option C

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You have been driivng for j hrs at a spd of 50 mph
So, total distance covered = j*50= 50j miles

So, 23.7 - 50j --> ANS

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