Solve the problem.On a sunny day, a tree and its shadow form the sides of a right triangle. If the hypotenuse is 
long and the tree is 28 meters tall, how long is the shadow?
A. 49 m
B. 45 m
C. 63 m
D. 21 m
Answer: D
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Find the derivative of the function at P0 in the direction of u.f(x, y, z) = -4xy3z2, P0(-4, -64, 16), u = -2i + j - 2k
A. - 
B. - 67,108,864
C. - 83,886,080
D. - 
Determine whether the sequence of vertices is an Euler circuit.
F ? E ? C ? B ? A ? E ? D ? C ? A ? F ? E
A. Yes B. No
Find an approximate value for the integral, using Simpson's rule with n intervals.
, n = 4
A. 
B. 
C. 
D. 
Provide an appropriate response.Determine whether a linear or quadratic function would be a more appropriate model for the graphed data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the coefficient of x2 should be positive or negative. CRIME STATISTICS 
Years since 2000
A. Quadratic; positive B. Linear; positive C. Quadratic; negative D. Linear; negative