Straighterline calculus I MAT250 Graded Quiz: Topics 7 & 8 Questions and Answers (2025)

Straighterline calculus I MAT250 Graded Quiz: Topics 7 & 8 Questions
and Answers (2025)

• MAT250_TW_V4
• Topic 8: Curve Sketching



Started on Wednesday, March 5, 2025, 2:42 PM


State Finished


Completed on Wednesday, March 5, 2025, 2:57 PM


Time taken 15 mins 55 secs


Grade 44.00 out of 55.00 (80%)

Question 1
Incorrect
0.00 points out of 2.75


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Question text
Given f(x)=2x2−8−−−−−−√f(x)=2x2−8, which of the following is the best to use as x0x0 when
determining the value of f(5.5)f(5.5) by the method of linear approximation?

Select one:
a.
55


b.
5.4955.495
c.
5.5015.501
d.
66
Question 2

, Correct
2.75 points out of 2.75


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Question text
A cube is expanding. When each edge xx is 10cm10cm, its volume VV is increasing
at 3cm3/ s3cm3/ s. At what rate is the length of each edge changing with respect to time?

Select one:
a.
0.01cm/ s0.01cm/ s


b.
0.1cm/ s0.1cm/ s
c.
0.001cm/ s0.001cm/ s
d.
1cm/ s1cm/ s
Question 3
Correct
2.75 points out of 2.75


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Question text
A particle moves along the xx-axis with its position on the axis at time tt given by
p(t)=2t+46−t,0<t<6p(t)=2t+46−t,0<t<6. At which of the following times is the velocity equal to 33?
Select one:
a.
44


b.
66
c.
15−113−−−√415−1134
d.
1010
Question 4
Correct
2.75 points out of 2.75