Determine whether the equation defines y as a function of x.x2 + y2 = 36
A. y is a function of x
B. y is not a function of x
Answer: B
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Perform the operation and give the answer as a fraction in lowest terms.
- 
A. - 
B. - 
C. - 
D. - 
Find the derivative of the function.y = 5 tan3x
A. 15 tan3x sec x B. 15 tan2x sec2x C. 15 tan2x D. 15 tan4x
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
Solve the problem.The perimeter of a rectangle is 64 m. If the width were doubled and the length were increased by 5 m, the perimeter would be 100 m. What are the length and width of the rectangle?
A. Length: 19 m; width: 13 m B. Length: 16 m; width: 11 m C. Length: 13 m; width: 19 m D. Length: 16 m; width: 16 m