mat 250 graded exam 1 calculus chapter 3 an intro to derivativesmat 250 graded exam 1 calculus chapter 3 an intro to derivativesmat 250 graded exam 1 calculus chapter 3 an intro to derivativ
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6/3/2020 Graded Exam 1
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MAT250_TW_V3 | Chapter 3: An Introduction to Derivatives
Started on Tuesday, May 19, 2020, 4:35 PM
State Finished
Completed on Tuesday, May 19, 2020, 5:02 PM
Time taken 27 mins
Grade 125.00 out of 125.00 (100%)
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Question 1
x + 1
Correct Determine, if it exists, lim
2
x→3 x − 9
5.00 points out
of 5.00 Select one:
a. The limit does not exist.
10
b. − 6
Question 2 Marjorie’s school is 2 miles away from her house. If she rides her bicycle to school,
Correct and it takes her 20 minutes to get to school, what is her average rate of speed in
5.00 points out
miles per hour?
of 5.00
Select one:
a. 10 mi / h
b. 1 mi / h
c. 60 mi / h
d. 0.1 mi / h
e. None of the above
The correct answer is: None of the above
Question 3 1
The instantaneous rate of change of a ball (in ft/s) is given by f ′ (x) = . When
√x
Correct
was the ball travelling 2 ft/s ?
5.00 points out
of 5.00 Select one:
1
a. 4
sec
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