Identify the open intervals where the function 
is increasing or decreasing.
?
A. ?decreasing: 
; increasing: 
B. ??increasing: 
; decreasing: 
C. ?increasing on 
D. ??decreasing on
E. ?none of the above
Answer: A
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Find the cross product and determine whether the proportion is true or false.
= 
A. 3120 = 3120; true B. 3120 ? 2700; false C. 2700 = 2700; true D. 8190 ? 360; false
Solve.Two tracking stations are on the equator 121 miles apart. A weather balloon is located on a bearing of N 38°E from the western station and on a bearing of N 22°E from the eastern station. How far is the balloon from the western station?
A. 407 miles B. 380 miles C. 416 miles D. 371 miles
Solve the problem.The two equal sides of an isosceles triangle measure three feet. Let the angle between the sides measure ?. Find the area A of the triangle as a function of 
. The answer may include more than one trigonometric function.
What will be an ideal response?
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 2x2 
A. 
B. 
C. 
D. 