1) A.0.110 B.0.064 C. 0.031 D.0.01 E.0 2) A machine is rolling a metal cylinder
ID: 2829786 • Letter: 1
Question
1)
A.0.110
B.0.064
C.0.031
D.0.01
E.0
2)
A machine is rolling a metal cylinder under pressure. The radius of the cylinder is decreasing at a constant rate of 0.05 cm/sec and the volume Vis 128 ? cm3. At what rate is the length h changing when the radius r is 2.5 cm? V = ? r2h.
A.20.48 cm/sec
B.0.4096 cm/sec
C.-16.38 cm/sec
D.0.8192 cm/sec
E.None of these
3)
Given that f(x)=-x^2+8x-15 has a relative m aximum at x=4,choose the correct statem ent.
A.f' is positive on the interval (-?,?)
B.f' is negative on the interval (4,?)
C.f' is negative on the interval (-?,4)
D. None of these
4)
A.f is not continuous on [ -2, 0 ] but f is differentiable on (-2,0)
B.f is continuous on [ -2, 0] but f is not differentiable at x = -1
C.f is not continuous on [ -2, 0 ] AND f is not differentiable at x = -1
D.None of these
5)
The rate of change in numbers of quail in a population is given by dQ / dt = 10Q - 5Q2 where Q is the number of Quail (in hundreds) t years after January 1, 2009. For what value of Q is the number of quail increasing the fastest?
A.Q=0
B.Q=1
C.Q=2.5
D.Q=5
E.Q=10
6)
0
800
1600
2000
nonexistent
7)
The position function for a particular object is s(t) = 4t2 + 3t + 5. Which of the following statements is true?
The velocity is constant.
The initial position is 3.
The initial velocity is 5.
The velocity at time t = 1 is 11.
None of these.
8)
x - 3y = 0
y - 3x = 0
x + 3y = 0
y + 3x = 0
Does not exist.
Explanation / Answer
A.0.110
B.0.4096 cm/sec
C.f' is negative on the interval (-?,4)
C.f is not continuous on [ -2, 0 ] AND f is not differentiable at x = -1
B.Q=1
1600
The initial velocity is 5.
y - 3x = 0
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.