Write an inequality involving the variable x that describes the set of numbers graphed.
A. -6 ? x < -2
B. -6 < x ? -2
C. -6 ? x ? -2
D. -6 < x < -2
Answer: A
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Find all specified roots.Seventh roots of 1.
A. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
B. -1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
C. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
D. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
, -1
Solve the problem.An invoice is received from Westminster Office Machines for $312.20 with terms of 6/14 and dated 
AS OF Mar 1. If a partial payment of $190 is made on Mar 12, find the balance due on the invoice.
A. $110.07 B. $103.47 C. $122.20 D. $202.13
Jane figures that her monthly car insurance payment of $140 is equal to 30% of the amount of her monthly auto loan payment. What is her total combined monthly expense for auto loan payment and insurance (rounded to the nearest dollar)? ?
A. $607 B. $467 C. $509 D. $42 E. $612
Find the second-order partial derivative.Find 
when z = 8xexy.
A. 16x2ex B. 16x2exy C. 8x3ex D. 8x3exy