Solve the problem.Consider the following simplified digital photograph that has a 3 × 3 grid with four gray levels numbered from 0 to 3. It shows a letter Y in dark gray on a white background.
Let A be the 3 × 3 matrix that represents this figure digitally. Find the matrix which represents the entire picture becoming one gray level darker.
A. 
B. 
C. 
D. 
Answer: D
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Perform the division.
A. x2 + 7 + 1
B. x2 + 7
C. x2 + 7 + 
D. x2 + 7x + 
Solve the problem.Marianne is planning a shopping trip to buy birthday gifts for her son. She estimates that the total price of the items she plans to purchase will be between $350 and $400 inclusive. If sales are taxed at a rate of 8.375% in her area, what is the range of the amount of sales tax she should expect to pay on her purchases? If Marianne's budget for the shopping trip is $425, will she necessarily be able to buy all the gifts that she has planned?
What will be an ideal response?
Write the equation of a sine function that has the given characteristics.Amplitude: 4Period: 6
A. y = 4 sin (6x)
B. y = 6 sin 
C. y = 4 sin 
D. y = sin (6?x) + 4
Solve the problem.The position of a weight attached to a spring is s(t) = -3 cos 5?t inches after t seconds. When does the weight first reach its maximum height?
A. After 
sec
B. After 
sec
C. After 
sec
D. After 
sec