Graph the function.y = -  sin 

A.

B.

C.

D.


Answer: C

Mathematics

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Solve the system by the method of substitution.



A) (3, 2)
B) (2, 3)
C) (2, –3)
D) (–3, 2)
E) (–2, 3)

Mathematics

Solve the problem.A balloon is rising vertically at a distance of  from an observer. When the angle of elevation is  it is changing at a rate of  How fast is the balloon ascending?

A. 5.6 ft/s B. 3.0 ft/s C. 3.3 ft/s D. 2.8 ft/s

Mathematics

Write the expression in the form a + bi, where a and b are real numbers. ( + )

A. 10 - 20i B. 20 + 10i C. -20 - 10i D. -10 + 20i

Mathematics

The price of a certain commodity in dollars per unit at time t (measured in weeks) is given by

?
.
?
What is the price of the commodity at  t = 0?
?
$__________ / unit
?
How fast is the price of the commodity decreasing at  t = 0?
?
$__________ / wk
?
Find the equilibrium price of the commodity. (Hint: It's given by . Also, use the fact that .)
?
$__________ / unit

What will be an ideal response?

Mathematics