Solve the system by elimination. 7x + 9y = -7-4x + 3y = 4
A. ?
B. {(-1, 0)}
C. {(-1, 1)}
D. {(-2, 1)}
Answer: B
Mathematics
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Find the requested sum for the arithmetic sequence.a1 = 1, d = -4; S6
A. -54 B. -19 C. 6 D. -23
Mathematics
Solve for x.
?
Fill in the blank(s) with the appropriate word(s).
Mathematics
The graph of a rational function y = f(x) is given below. Use the graph to give the solution set of 
and 
Use set notation for part (a) and interval notation for parts (b) and (c).
A. (a) ? (b) (-?, 3) ? (3, 4) (c) (-3, 3) ? (4, ?) B. (a) {4} (b) (-?, 3] ? [3, 4) (c) [-3, 3] ? [4, ?) C. (a) {4} (b) (-?, 3) ? (3, 4] (c) (-3, 3) ? [4, ?) D. (a) {4} (b) (-?, -3) ? (3, 4) (c) (-3, 3) ? (4, ?)
Mathematics
Write as the sum and/or difference of logarithms. Express powers as factors.log4
A. 8 - 
log4x
B. log4x - 2
C. 
log4x - 2
D. - 2log4x
Mathematics