Find the coordinates of the vertices and foci of the ellipse.9x2 + 25y2 = 225
A. V(-5, 0), V(5, 0), F(-4, 0), F(4, 0)
B. V(0, -5), V(0, 5), F(0, -3), F(0, 3)
C. V(-5, 0), V(5, 0), F(-3, 0), F(3, 0)
D. V(0, -5), V(0, 5), F(0, -4), F(0, 4)
Answer: A
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The position vector of a particle is r(t). Find the requested vector.The velocity at t = 1 for r(t) = (4t2 + 3t + 7)i - 6t3j + (7 - t2)k
A. v(1) = 7i - 6j - 1k B. v(1) = 11i + 18j + 2k C. v(1) = 5i - 18j - 2k D. v(1) = 11i - 18j - 2k
Find the equation of the tangent line to the curve when x has the given value.f(x) = x2 + 5x; x = 4
A. y = 13x - 16
B. y = - 
+ 
C. y = 
+ 
D. y = -39x - 80
Solve the problem.Tim needs to apply 3
gallons of herbicide per acre of soybeans. How many gallons of herbicide are needed for 388 acres?
A. 1455 gal
B. 294 gal
C. 103
gal
D. 291
gal
If $16,000 is invested at 10% for 20 years, find the future value if the interest is compounded daily.
A. $118,205.20 B. $117,637.20 C. $118,192.52 D. $118,126.47 E. $117,930.19