Find A-1 if it exists.A = 
A. 
B. 
C. 
D. 
Answer: A
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Solve the equation. Use words or set notation to identify equations that have no solution, or equations that are true for all real numbers. 18(x + 3) = 2(9x - 1) + 56
A. ? B. {x|x is a real number} C. {0} D. {54}
Solve the problem. First use front end rounding. Then find the exact answer.There are 27,878,400 square feet in one square mile. How many square feet are there in 32 square miles?
A. Estimate: 840,000,000 square feet; exact: 892,108,800 square feet B. Estimate: 900,000,000 square feet; exact: 892,096,000 square feet C. Estimate: 900,000,000 square feet; exact: 892,108,800 square feet D. Estimate: 840,000,000 square feet; exact: 892,096,000 square feet
Solve the inequality.x2 - 7x ? 0
A. (-?, -7] or [0, ?) B. [0, 7] C. [-7, 0] D. (-?, 0] or [7, ?)
Solve the problem.A sequence of payments of $1500 is invested at the end of every compounding period, where interest is compounded semiannually at an interest rate of 4.2%. What is the total amount of the annuity after 6 years?
A. $66,061.75 B. $55,945.93 C. $45,598.03 D. $20,231.64