Solve the problem.The area of a rectangular wall in a classroom is 297 square feet. Its length is 6 feet shorter than three times its width. Find the length and width of the wall of the classroom.
A. width = 11 ft; length = 29 ft
B. width = 11 ft; length = 27 ft
C. width = 11 ft; length = 17 ft
D. width = 11 ft; length = 39 ft
Answer: B
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Solve the problem.The Cartesian coordinates of a point are 
. Find the spherical coordinates.
A. 
B. 
C. 
D. 
Solve using the formula for the future value of an ordinary annuity.Find the value of the annuity at the end of the indicated time period. The amount, frequency of deposits, annual interest rate, and time period are given.amount: $125; quarterly; 10%; 8 years
A. $12,018.91 B. $6718.90 C. $6418.80 D. $6018.78
Solve the problem.A construction crane lifts a bucket of sand originally weighing 
at a constant rate. Sand is lost from the bucket at a constant rate of
. How much work is done in lifting the sand 
? (Neglect the weight of the bucket.)
A. 11,200 ft ? lb B. 8000 ft ? lb C. 12,800 ft ? lb D. 9600 ft ? lb
Find the inverse of the matrix.
?
What will be an ideal response?