Simplify.-22 ÷ 11(-9)
A. -11
B. 11
C. 18
D. -18
Answer: C
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Provide an appropriate response.Perform the multiplication and express in scientific notation: (8.5 × 107)(4 × 10-3)
A. 3.4 × 10-10 B. 34 × 104 C. 3.4 × 105 D. 340,000
Find the domain and the range of the functions or relations from the graph.
A. domain: [2]; range: (-?, ?) B. domain: [2]; range: [2] C. domain: (-?, ?); range: [2] D. domain: (-?, ?); range: (-?, ?)
Provide an appropriate response.Rationalize the denominator and simplify: 
Fill in the blank(s) with the appropriate word(s).
Solve the problem using matrices.The figure below shows the intersection of three one-way streets. To keep traffic moving, the number of cars per minute entering an intersection must equal the number of cars leaving that intersection. Set up a system of equations that keeps traffic moving, and use Gaussian elimination to solve the system. If construction limits z to t cars per minute, how many cars per minute must pass through the other intersections to keep traffic moving?
A. t + 8 cars/min between I2 and I1; t + 3 cars/min between I1 and I3 B. t - 2 cars/min between I2 and I1; t + 1 cars/min between I1 and I3 C. t + 2 cars/min between I2 and I1; t - 3 cars/min between I1 and I3 D. t + 1 cars/min between I2 and I1; t + 4 cars/min between I1 and I3