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 an orange sticker.Use the fact that for A = 
, A-1 = 
.
A. $5.21
B. $5.32
C. $4.96
D. $5.79
Answer: B
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Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.12y2 + 54y - 30
A. 6(2y - 1)(y + 5) B. (12y - 6)(y + 5) C. prime D. 6(2y + 1)(y - 5)
Solve the problem.The elk population in a certain region is given by the function 
where the time t is measured in years. What is the largest number of elk present in the region at any time?
A. 120 elk B. 940 elk C. 1060 elk D. 1180 elk
Determine the slope and y-intercept of the function.f(x) = 
x - 3
A. m = - 
; b = 3
B. m = 4; b = 3
C. m = - 3; b = 
D. m = 
; b = - 3