Graph the pair of parametric equations in the rectangular coordinate system.x = 
, y = 3t + 4; 0 ? t ? 4 
A. 
B. 
C. 
D. 
Answer: B
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Use a calculator to verify the value found by using the double-angle formulas.Find tan 
directly and by using functions of 
.
A. 0.4816 B. 1.254 C. 0.7818 D. 0.9631
Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.x2 - 25x + 625
A. (x + 25)2 B. (x - 25)2 C. Prime D. (x + 25)(x - 25)
The transformation that takes a point (a, b) to the point (-a,-b) is:
(a) A reflection about the line y = x. (b) A translation through the vector (-1,-1). (c) A similitude with scale factor 3. (d) A rotation of 90°.
Solve the problem.When an object is dropped to the ground from a height of h meters, the time it takes for the object to reach the ground is given by the equation t = 
, where t is measured in seconds. Solve the equation for h. Use the result to determine the height from which an object was dropped if it hits the ground after falling for 3 seconds.
A. h = 4.9t; 14.7 m B. h = 24.01t; 72 m C. h = 4.9t2; 44.1 m D. h = 24.01t2; 216.1 m