Find the vector z, given  u =   and  v =, and w =

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-3u+ 4v- 4z = w



A.
B.
C.
D.
E.

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Answer: D

Mathematics

First, rewrite each equation in exponential form. Then, use a table of coordinates and the exponential form to graph the logarithmic function. Begin by selecting -2, -1, 0, 1 and 2 for y. Finally, based on your graph, describe the shape of a scatter plot that can be modeled by f(x) = log b x, 0 < b < 1.y = log1/7  x

A.

increasing
B.

decreasing, 
although rate of decrease is slowing down
C.

increasing, 
although rate of increase is slowing down
D.

decreasing, 
although rate of decrease is slowing down

Graph the quadratic function using its vertex, axis of symmetry, and intercepts.f(x) = -x2 + 4x + 5

A. vertex (2, 9)
intercepts (5, 0), (- 1, 0), (0, 5)

B. vertex (-2, -9)
intercepts (-5, 0), (1, 0), (0, -5)

C. vertex (2, -9)
intercepts (5, 0), (- 1, 0), (0, -5)

D. vertex (-2, 9)
intercepts (-5, 0), (1, 0), (0, 5)

Solve.A ranger in fire tower A spots a fire at a direction of 40°. A ranger in fire tower B, which is 28 miles directly east of tower A, spots the same fire at a direction of 330°. How far from tower A is the fire? Round to the nearest mile.

A. 22 mi B. 24 mi C. 33 mi D. 26 mi

Write the augmented matrix for the system of linear equations.

A.
B.
C.
D.