Solve for x. ? 7

A. x ? - 24 or x ? 46
B. 48 ? x ? 62
C. - 24 ? x ? 46
D. x ? 48 or x ? 62


Answer: A

Mathematics

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Expand.(4m - 3n)4

A. 256m4 - 768m3n + 864m2n2 - 432mn3 + 81n4 B. 256m4 - 768m3n - 864m2n2 - 432mn3 - 81n4 C. 256m4 - 12,288m3n + 5184m2n2 - 432mn3 + 81n4 D. 256m4 - 12,288m3n - 5184m2n2 - 432mn3 - 81n4

Mathematics

Solve the problem.An object of mass m is dropped from a helicopter. Assuming that air resistance is proportional to velocity, the velocity v of the object satisfies the equation   Find velocity as a function of time.

A. v = (1 - e-kt/m)
B. v =  - e-kt/m
C. v = (1 - ekt/m)
D. v = (1 - e-kt/m)

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Tell whether the expression is a polynomial. If it is, give its degree.-3z6 + z

A. Polynomial; degree 1 B. Polynomial; degree 7 C. Polynomial; degree 6 D. Not a polynomial

Mathematics

Simplify.If P(x) = 4x - 9, find P(a).

A. 4a B. 4a - 9 C. -5a D. 4x - 9

Mathematics