Write the first four terms of the recursive sequence.a1 = -6, an = an - 1 + 7 for n ? 2
A. 1, 8, 15, 22
B. -6, 7, 14, 21
C. -6, 1, 8, 15
D. 0, 7, 14, 21
Answer: C
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Find the moment or center of mass of the wire, as indicated.Find the center of mass of a wire that lies along the semicircle y = 
if the density of the wire is 
A. 
= 
?, 
= 
?
B. 
= 0, 
= 
?
C. 
= 0, 
= 
?
D. 
= 
?, 
= 
?
Find the value(s) of the function, subject to the system of inequalities.Find the maximum and minimum ofz = 6x + 21y subject to x ? 0, y ? 0, 4x + 5y ? 30, 4x + 3y ? 20, x ? 5, y ? 8.
A. -126; 0 B. -97.5; -126 C. 30; 0 D. 30; -126
Find the product.(2x + 3)4
A. (4x2 + 6x + 9)4 B. 16x4 + 96x3 + 216x2 + 216x + 81 C. 16x3 + 96x2 + 216x + 216 D. 48x4 + 288x3 + 216x2 + 648x + 81
Solve the problem.Use Gauss's function, f(n) = 
n2 + 
n, to find a natural number n such that the sum of the first n natural numbers is 
A. 6 B. 5 C. 3 D. 4