If the sequence is arithmetic, find the common difference. If the sequence is not arithmetic, say so.-6, -11, -16, -21, . . .
A. -15
B. -10
C. -5
D. Not arithmetic
Answer: C
Mathematics
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Find the indicated intercept(s) of the graph of the function.y-intercept of f(x) = 
A. 
B. (0, 6)
C. 
D. none
Mathematics
Let z vary jointly with x and y. Find the constant of variation k. Then, use 
to find z when x = 5 and y = 7.z = 56 when x = 
and y = 7
A. k = 15; z = 490 B. k = 48; z = 1680 C. k = 56; z = 1960 D. k = 14; z = 525
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Solve.36x2 + 24x = 0
A. {0}
B. 
C. 
D. 
Mathematics