Match the given function to its graph.1) y = sin (x)2) y =  cos x3) y =  sin x 4) y = cos (x)A B 

width="200" />CD 



A. 1B, 2D, 3C, 4A

B. 1A, 2B, 3C, 4D

C. 1A, 2D, 3C, 4B

D. 1A, 2C, 3D, 4B

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Answer: A

Mathematics

Round the number as indicated.872,489 to the nearest ten

A. 872,470 B. 872,590 C. 872,490 D. 872,500

In a manufacturing process, 10,000 parts were produced in June. The process resulted in a normal distribution of these parts. If the acceptance level was +/- 3åm how many parts had to be scrapped?

What will be an ideal response?

Solve the problem.The logistic growth function f(t) =  describes the population of a species of butterflies  after they are introduced to a non-threatening habitat. How many butterflies were initially introduced to the habitat?

A. 2 butterflies B. 6 butterflies C. 520 butterflies D. 70 butterflies

Write the expression in the form a + bi, where a and b are real numbers.()2

A. 3 B. 3i C. 9i D. -3