Evaluate the expression (4 + 7i)(11 - 4i) and write the result in the form a + bi.
(a) 61 + 72i
(b) 44 + 77i
(c) 72 + 61i
(d) - 61 - 72i
(e) none of these
(c) 72 + 61i
Mathematics
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Find the midpoint of the segment having the given endpoints.(7, 7) and (4, 8)
A. (3, -1)
B. 
C. (11, 15)
D. 
Mathematics
Predict the general, or nth term, an, of the sequence.3, 9, 27, 81, 243, . . .
A. 3 + 6(n - 1) B. 6n C. 3n-1 + 2 D. 3n
Mathematics
Of the given values of x, identify those at which the function is continuous.f(x) = 
; x = -6, 0, 6
A. -6, 0 B. None C. 6, 0, -6 D. 0, 6
Mathematics
Simplify the expression.(-5)3
A. -125 B. -15 C. 15 D. 125
Mathematics