Find the radius of a circle where a central angle ? intercepts an arc of length s. Round your answer to one decimal place when necessary.? = 2.5, s = 20 ft
A. 15.9 ft
B. 7.7 ft
C. 8 ft
D. 50 ft
Answer: C
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Graph.f(x) = 
x2 - 3x + 3
A. 
B. 
C. 
D. 
Solve the rational equation. If there is no solution, state this as your answer.
= 
A. {-9, 9} B. no solution C. {-9} D. {9}
Solve the problem.Find parametric equations for an object that moves along the ellipse 
+ 
= 1 with the motion described.The motion begins at (0, 6), is clockwise, and requires 3 seconds for a complete revolution.
A. x = 4 cos (
?t), y = 6 sin (
?t), 0 ? t ? 3
B. x = 4 sin (3?t), y = 6 cos (3?t), 0 ? t ? 3
C. x = 4 sin (
?t), y = 6 cos (
?t), 0 ? t ? 3
D. x = 4 sin (
?t), y = -6 cos (
?t), 0 ? t ? 3
If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.x2 + 9x - 36
A. Prime B. (x + 12)(x - 3) C. (x - 12)(x + 3) D. (x - 12)(x + 1)