Solve the problem.The voltage V in a certain electric circuit as a function of the time t (in s) is given by  How fast is the voltage changing when t = 2.0 ms?

A. 1.1 V/s
B. 410 V/s
C. 370 V/s
D. 360 V/s


Answer: B

Mathematics

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Describe the set of points (x, y, z) defined by the equation.z = 0

A. All points of the form (x, y, 0) B. All points of the form (x, 0, 0) C. All points of the form (0, y, 0) D. Only the point (0, 0, 0)

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Find the amplitude, period, or phase shift of the given function as requested.Find the period of y = 2 cos.

A.
B. 2
C.
D. ?

Mathematics

Sketch by hand the graph of the function.f(x) = log3 x

A.

B.

C.

D.

Mathematics

Solve the problem.In her will the late Mrs Barbaroni said that each child in her family could have an annuity of $2500 at the end of each year for 9 years, or the equivalent present value. If money can be deposited at 7% compounded annually, what is the present value?

A. $16,288.08 B. $19,019.22 C. $25,147.72 D. $12,582.38

Mathematics