Write an equivalent expression. Use an associative law.a + (b + 7)

A. (b + 7) + a
B. a + (7 + b)
C. (a + b) + 7
D. a(b + 7)

Answer: C

Mathematics

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A function f(x), a point x0, the limit of f(x) as x approaches x0, and a positive number ? is given. Find a number such that for all x, 0 < < ? ? < ?.f(x) = mx, m > 0, L = 6m, x0 = 6, and ? = 0.05

A. ? = 6 +
B. ? = 6 - m
C. ? =
D. ? = 0.05

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Mathematics

Find the center, transverse axis, vertices, foci, and asymptotes of the hyperbola. - = 1

A. center at (0, 0)
transverse axis is x-axis
vertices at (-10, 0) and (10, 0)
foci at (- 2, 0) and (2, 0)
asymptotes of y = - 5 and y = 5
B. center at (0, 0)
transverse axis is x-axis
vertices at (-2, 0) and (2, 0)
foci at (-10, 0) and (10, 0)
asymptotes of y = - 5 and y = 5
C. center at (0, 0)
transverse axis is y-axis
vertices at (0, -2) and (0, 2)
foci at (- 2, 0) and (2, 0)
asymptotes of y = - 5 and y = 5
D. center at (0, 0)
transverse axis is x-axis
vertices at (-2, 0) and (2, 0)
foci at (- 2, 0) and (2, 0)
asymptotes of y = - 5 and y = 5