Solve the problem.The parabola y2 = -28x is shifted 7 units down and 4 units to the right. Find the focus and directrix of the new parabola.
A. Focus: (-7, -3); Directrix: y = 11
B. Focus: (11, -7); Directrix: x = 11
C. Focus: (-3, -7); Directrix: x = -3
D. Focus: (-3, -7); Directrix: x = 11
Answer: D
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Perform the indicated operation. Simplify the answer when possible.
+ 
A. 2
B. 8
C. 4
D. 2
Tell whether the triangles are similar or not similar.
A. Not similar B. Similar
Solve the problem.The manager of a coffee shop has one type of coffee that sells for $6 per pound and another type that sells for $15 per pound. The manager wishes to mix 40 pounds of the $15 coffee to get a mixture that will sell for $7 per pound. How many pounds of the $6 coffee should be used?
A. 160 lb B. 320 lb C. 180 lb D. 360 lb
Find the logarithm. Give an approximation to four decimal places.ln 0.000555
A. 3.2557 B. 7.4965 C. -7.4965 D. -3.2557