Perform the indicated operation and express in lowest terms.
? 
A.
B.
C.
D.
Answer: C
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Write the vector in the form ai + bj.
A. 9i + 2j B. -2i + 9j C. 9i - 2j D. 2i + 9j
Simplify the radical. Assume that all variables represent positive real numbers.
A. 2x
B. 2x
C. x
D. 2x
Graph the linear function. Give the domain and range.f(x) = 4x + 6
A. Domain: (-?, ?); range: (-?, 6)
B. Domain: (-6, 6); range: (6, 6)
C. Domain: (-?, ?); range: (-?, ?)
D. Domain: (-?, ?); range: (-?, ?)
Write a system of inequalities that describes the possible solutions to the problem.The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. The company can produce up to 140 rings each day, using up to 350 total man-hours of labor. It takes 5 man-hours to make one VIP ring and 7 man-hours to make one SST ring. Let x represent the number of VIP rings, and let y represent the number of SST rings. Including the system inequalities and
, find the remaining inequalities that best describe this company's ring production.
A. x ? 140, y ? 140, 7x + 5y ? 350 B. x + y ? 140, 7x + 5y ? 350 C. x + y ? 140, 5x + 7y ? 350 D. x ? 140, y ? 140, 5x + 7y ? 350