Given that the x- and y-coordinates of a moving particle are given by the indicated parametric equations, find the magnitude and direction of the acceleration for the specific value of t.x = 
, y = 
, t = 2
A. 0; 123.1°
B. 0.01; 303.1°
C. 0.01; 123.1°
D. 0; 303.1°
Answer: C
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Use a graphing calculator or computer to determine which of the given viewing windows displays the most appropriate graph of the specified function.f(x) = 
A. [-10, 10] by [-10, 5] B. [-4, 5] by [-15, 25] C. [-4, 5] by [-5, 5] D. [-10, 20] by [-50, 50]
The management of Titan Tire Company has determined that the weekly demand and supply functions for their Super Titan tires are given by
?
?
respectively, where p is measured in dollars and x is measured in thousands of units. Find the equilibrium quantity and price.
?
xb = __________ units
?
pb = $ __________
What will be an ideal response?
Use the discriminant to determine the number and type of solutions of the equation.x2 + 2x + 7 = 0
A. two complex but not real solutions B. two real solutions C. one real solution
Factor the expression completely, if possible.x4 - 100y2
A. (x + 10y)(x - 10y) B. (x2 + 10y2)(x2 - 10y2) C. (x2 + 10y)(x2 - 10y) D. (x2 - 10y)2