Answer the question.The equation of a circle can be written in the form x2 + y2 = r2. Is this a function? Why or Why not?
What will be an ideal response?
It is not a function because for y ? 0, there are 2 y-values for every x-value. It fails the vertical line test.
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Find the extreme values of the function and where they occur.y = 
A. Absolute minimum value is -1 at x = 0.5. B. Absolute maximum value is 1 at x = 0.5, absolute minimum value is -1 at x = 0.5. C. Absolute maximum value is 1 at x = 0. D. Absolute maximum value is 1 at x = 0.5.
Solve the problem.If the three lengths of the sides of a triangle are known, Heron's formula can be used to find its area. If a, b, and c are the three lengths of the sides, Heron's formula for area is: A = 
where s is half the perimeter of the triangle, or s = 
(a + b + c).Use this formula to find the area of the triangle if a = 4 cm, b = 10 cm and c = 12 cm. 
A. 8
sq. cm
B. 3
sq. cm
C. 3
sq. cm
D. 3
sq. cm
Write 
and 
in trigonometric form and find their product.
?
?
A. ?
B. 
C. ?
D. ?
E. ?
Solve the problem.A piece of cable which is 
m long is to be cut into pieces 
m long. How many pieces will there be?
A. 4 pieces
B. 
piece
C. 18 pieces
D. 12 pieces