Solve.Computer sales in the United States have increased since 1992. The polynomial 
can be used to approximate the number of computer sales during the years 1990-2000 where x is the number of years after 1990 and the value of the polynomial is the computer sales (in millions). Approximate the number of computers sold in 1998. Round the answer to the nearest tenth of a million.
A. 10.2 million computers
B. 13.5 million computers
C. 12.0 million computers
D. 15.1 million computers
Answer: B
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Find parametric equations for the line described below.The line through the point P(-4, -5, 4) and perpendicular to the plane 
A. x = -1t - 4, y = 4t - 5, z = 4t + 4 B. x = 1t + 4, y = -4t + 5, z = -4t - 4 C. x = -1t + 4, y = 4t + 5, z = 4t - 4 D. x = -4t - 4, y = -1t - 5, z = 4
Solve the problem.Find 
at t = 0 for the function w = sin(x) cos(y) ln(z) where x = 5t2 + 9t + 
, y = t, z = e6t.
A. 6 B. 12 C. 1 D. 6e6
Find an equation of variation for the given situation.r varies directly as s, and r = 0.0667 when s = 1.
A. r = 0.0667s B. r = 16s C. r = 15s D. r = 14s
Factor completely, or state that the polynomial is prime.49x2 + 9
A. (7x - 3)2 B. (7x + 3)(7x - 3) C. prime D. (7x + 3)2