Find the inverse of the matrix (if it exists).A = 
A. No solution
B. A-1 = 
C. A-1 = 
D. A-1 = 
Answer: B
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Work the application. Write a legend and an equation. Solve the equation and answer in a complete sentence.The billing department in a large company had $15,671 in its annual supplies budget. So far this year the department has purchased a computer system for $4851, new furniture for $2208, and various office supplies for $575. Rina's job is to update the department's budget. How much is left in the department's supplies budget after these purchases?
A. Let b = the amount of money left in the supplies budget. $4851 + $2208 + $575 = $15,671 + b There is $7634 left in the supplies budget. B. Let b = the amount of money left in the supplies budget. $4851 + $2208 + $575 + b = $15,671 There is $8612 left in the supplies budget. C. Let b = the amount of money left in the supplies budget. $4851 + $2208 + $575 + b = $15,671 There is $8037 left in the supplies budget. D. Let b = the amount of money left in the supplies budget. $4851 + $2208 + $575 = $15,671 + b There is $10,245 left in the supplies budget.
Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.
2
A. 
B. 
C. 
D. 
Solve the problem.Bruce is a retired carpenter who builds patio chairs and dog houses which he sells at his local flea market. It takes him 4 hours to build a dog house and 5 hours to build a patio chair. Bruce can work no more than 40 hours per week and he must produce more dog houses than chairs. Use a system of inequalities to describe this situation and solve the system by graphing. Use D for the number of dog houses and P for the number of patio chairs produced in a week. 
A. 
B. 
C. 
D. 
Solve the problem.A weight hangs from a rope 20 feet long. It swings through an angle of 27° each second. How far does the weight travel each second? Round to the nearest 0.1 foot.
A. 8.7 feet B. 9.4 feet C. 9.0 feet D. 8.1 feet