Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. 
Answer: B
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Solve the rational inequality. Express the solution in interval notation.
? 3
A. (-9, 8) B. (-9, 8] C. (-9, 32) D. (-9, 32]
Solve the logarithmic equation. Round to four decimal places.log3(4x - 3) = 2.3
A. {2.3784} B. {-0.5418} C. {6.1284} D. {3.8784}
Allocate overhead as indicated. Round to the nearest dollar.Westminster Office Machines allocates its overhead of $2,358,720 by the sales of each product. Find the allocation.ProductSold Average Sale PriceCopiers260? $930Typewriters280? $711Fax machines210? $940Computers270? $996
A. $628,680 for copiers $517,608 for typewriters $513,240 for fax machines $699,192 for computers B. $628,680 for copiers $199,080 for typewriters $148,050 for fax machines $699,192 for computers C. $241,800 for copiers $199,080 for typewriters $197,400 for fax machines $268,920 for computers
Solve.Amy teaches Chinese lessons for $55 per student for a 6-week session. From one group of students, she collects $1,650. Find how many students are in the group.
A. 30 students B. 20 students C. 32 students D. 34 students