3. A car that Sophia wants to buy costs $34,000. She does research and finds that after 12 years the car depreciates to a value of zero. If the car depreciates in straight line form, write the straight line depreciation equation. X-0 y= $34,000 X-12 y = $0 (,$) (, $) Write 2 points represented by this Find the slope of those 2 points. x2-x, Use the slope to write the equation. y= .. ....

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
ChapterCSR: Contents Of Student Resources
Section: Chapter Questions
Problem 8.14EP
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3. A car that Sophia wants to buy costs $34,000. She does research and finds that after 12 years
the car depreciates to a value of zero. If the car depreciates in straight line form, write the
straight line depreciation equation.
X=0 y= $34,000
X-12 y = $0
(, $)
( , $ )
Write 2 points represented by this
Find the slope of those 2 points.
x2-x,
Use the slope to write the equation.
y= ....
4. A car traveling on asphalt makes a sudden stop. The drag factor of the road is 1.25 and the
brakes are operating at 87% efficiency. If the car leaves 4 distinct skid marks that are 58 feet
long, how fast was the car traveling.
S= 30Dfn
D= skid mark length
f= drag factor
n= brake efficiency written as a decimal
CHAPTER 4 TEST
NAME
7. Victor found 5 cars online that he will go to see. The prices of the cars are: $4,300; $4,250;
$4,500; $3,950; and $4,200. What is the median car price?
First, put the values in ascending order, lowest to highest;
5. Kenya is driving on the highway at a speed of 80 mph. She sees an accident about 600 feet
ahead and must come to a complete stop. Should Kenya swerve to avoid a collision with the
accident ahead?
s?
S+
20
802
80 +
20
How far before she stops?
Will she have to swerve to avoid the accident?
Transcribed Image Text:3. A car that Sophia wants to buy costs $34,000. She does research and finds that after 12 years the car depreciates to a value of zero. If the car depreciates in straight line form, write the straight line depreciation equation. X=0 y= $34,000 X-12 y = $0 (, $) ( , $ ) Write 2 points represented by this Find the slope of those 2 points. x2-x, Use the slope to write the equation. y= .... 4. A car traveling on asphalt makes a sudden stop. The drag factor of the road is 1.25 and the brakes are operating at 87% efficiency. If the car leaves 4 distinct skid marks that are 58 feet long, how fast was the car traveling. S= 30Dfn D= skid mark length f= drag factor n= brake efficiency written as a decimal CHAPTER 4 TEST NAME 7. Victor found 5 cars online that he will go to see. The prices of the cars are: $4,300; $4,250; $4,500; $3,950; and $4,200. What is the median car price? First, put the values in ascending order, lowest to highest; 5. Kenya is driving on the highway at a speed of 80 mph. She sees an accident about 600 feet ahead and must come to a complete stop. Should Kenya swerve to avoid a collision with the accident ahead? s? S+ 20 802 80 + 20 How far before she stops? Will she have to swerve to avoid the accident?
6. Nina's car exponentially depreciates at a rate of 9% per year. If Nina bought the car when it
was 5 years old for $14,000, what was the original price of the car?
y=A(1-r)x
y=14,000
r = 9% write as a decimal
X=years
Solve for A.
8. Sarah bought a 9-year old car for $17,000. The depreciation rate is 9.4%. How much did the
car originally cost?
(This problem is just like problem number 6)
y=A(1-r)*
y=17,000
rF.094
x=9
CHAPTER 4 TEST
NAME
Solve for A.
9. I just bought a new car for $29,500. I was told that its depreciation rate is 8.5%.
How much will it be worth in 7 years?
(This problem is just like problems 6 & 8)
y=A(1-r)*
10. Yaw Marks: USE THE 2 FORMULAS BELOW TO ANSWER 10a & 10b
Yaw Mark Speed Formula
S=V15fr
Yaw Mark Radius Formula
r=
8M
M
Transcribed Image Text:6. Nina's car exponentially depreciates at a rate of 9% per year. If Nina bought the car when it was 5 years old for $14,000, what was the original price of the car? y=A(1-r)x y=14,000 r = 9% write as a decimal X=years Solve for A. 8. Sarah bought a 9-year old car for $17,000. The depreciation rate is 9.4%. How much did the car originally cost? (This problem is just like problem number 6) y=A(1-r)* y=17,000 rF.094 x=9 CHAPTER 4 TEST NAME Solve for A. 9. I just bought a new car for $29,500. I was told that its depreciation rate is 8.5%. How much will it be worth in 7 years? (This problem is just like problems 6 & 8) y=A(1-r)* 10. Yaw Marks: USE THE 2 FORMULAS BELOW TO ANSWER 10a & 10b Yaw Mark Speed Formula S=V15fr Yaw Mark Radius Formula r= 8M M
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