Combine like terms.8x + 6x
A. 2x
B. 14
C. 14x
D. 4x
Answer: C
Mathematics
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Multiply or divide as indicated.(-3)(-4)(5)
A. 160 B. 60 C. -60 D. 50
Mathematics
Solve the problem.A certain radioactive isotope has a half-life of 252 years. Determine the annual decay rate, k.
A. 0.135% B. 0.195% C. 0.265% D. 0.275%
Mathematics
Solve the problem.The volume V (in cubic inches) of a cylindrical pipe with length 12 inches is given by V(r) = 12?r2, where r is the radius of the piston (in inches). If the radius is increasing with time t (in minutes) according to the formula r(t) = 
t2, t ? 0, find the volume V of the pipe as a function of the time t.
What will be an ideal response?
Mathematics
Factor by grouping.3a + 3n - a2 - an
A. (a - n)(3 + a) B. (a + n)(3 - n) C. (a - n)(3 - a) D. (a + n)(3 - a)
Mathematics