Decide whether or not the equation defines y as a function of x.x - y2 = -8
A. Yes
B. No
Answer: B
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Use the maximum/minimum finder on a graphing calculator to determine the approximate location of all local extrema.f(x) = 0.1x3 -15x2 - 69x + 76
A. Approximate local maximum at -102.249; approximate local minimum at 2.249 B. Approximate local minimum at -2.249; approximate local maximum at 102.249 C. Approximate local minimum at -102.249; approximate local maximum at 2.249 D. Approximate local maximum at -2.249; approximate local minimum at 102.249
An isotope of thorium, 227 Th, has a half-life of 18.4 days. How long will it take 78% of the sample to decompose? Round your answer to two decimal places. ?
A. 40.19 days B. 42.08 days C. 41.50 days D. 40.87 days E. 38.05 days
Find a rectangular equation for the plane curve defined by the parametric equations.x = 2t - 1, y = t2 + 6; -4 ? t ? 4
A. y = 
x2 + 1; for x in -6 ? x ? 4
B. y = 
x2 + 
x + 
; for x in -9 ? x ? 7
C. y = - 
x + 30; for x in -6 ? x ? 4
D. y = x2 + 1; for x in -2 ? x ? 2
What are two lines in the same plane called? ?
A. perpendicular B. intersecting C. transversal D. coplanar E. parallel