Determine whether the given expression is a monomial (Yes or No). For those that are monomials, state the coefficient and degree.9xy9
A. yes; coefficient 9; degree 9
B. no
C. yes; coefficient 10; degree 9
D. yes; coefficient 9; degree 10
Answer: D
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Find the volume of the solid generated by revolving the shaded region about the given axis.About the x-axis
A. 8?2 - 16? B. 8?2 - 4? C. 8?2 D. 8?2 + 16?
Write the number in scientific notation.780,000
A. 7.8 × 10-4 B. 7.8 × 104 C. 7.8 × 10-5 D. 7.8 × 105
Solve the problem.A bookstore is having a sale. All books included in the sale have a colored sticker on them to indicate the sale price. There are green stickers, red stickers, and orange stickers. Bob, Sue, and Fred each make purchases of books that are on sale. Each row of the table gives information about the numbers of book purchases and the total cost of the purchase (before taxes) . 
Use this information to set up a matrix equation of the form 
which can be solved to determine the price for each type of sale book. Solve this matrix equation to find the price
of a book with a red sticker.Use the fact that for A = 
, A-1 = 
.
A. $6.79
B. $6.87
C. $6.99
D. $6.50
Evaluate the following improper integral whenever it is convergent.
?
?
A. 8 B. 0 C. -6 D. -10 E. the integral is divergent