Find the slope and the y-intercept of the given line.y = -4x + 7
A. -4, (0, -7)
B. 7, (0, -4)
C. -7, (0, -4)
D. -4, (0, 7)
Answer: D
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 4 tan t, y = 2 sec t; -?/2 ? t ? ?/2
A. 
B. 
C. 
D. 
Triangle ABC is a right triangle with sides of lengths a, b, and c and a right angle at C. Find the indicated trigonometric function value of A. Rationalize denominators containing radicals.a = 9, c = 
; find tan A.
A. 
B. 
C. 
D. 
Solve the problem.Solve the formula V = ?r2h + 
?R2h for r by writing it in the form ar2 + br + c = 0 and then using the quadratic formula.
A. r = ± 
B. r = ± 
C. r = ± 
D. r = ± 
Solve the problem.Sam Rush bought 195 shares of ABC Electronics at 
per share and 99 shares of Wisconsin Power at 
per share, and 374 shares of Peter's Manufacturing at 29 per share. Find the total amount that he paid, assuming he was charged a commission of 1%.
A. $18,685.67 B. $18,668.87 C. $20,533.70 D. $18,853.67