Find the vertex.f(x) = -x2 + 16x - 71

A. (-8, -7)
B. (7, -8)
C. (8, -7)
D. (8, 7)


Answer: C

Mathematics

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Find all the spanning trees in the graph.

What will be an ideal response?

Mathematics

Solve the problem.A merchant has coffee worth $4 a pound that she wishes to mix with 7 pounds of coffee worth $7 a pound to get a mixture that can be sold for $5 a pound. How many pounds of the $4 coffee should be used?

A. 7 lb B. 14 lb C. 21 lb D. 10.5 lb

Mathematics

Write an equation in slope-intercept form for the line shown.

A. y = 6x
B. y = -6x
C. y = - x
D. y = x

Mathematics

Decide whether the equation defines y as a function of x.y = -x

A. function B. not a function

Mathematics