Rewrite the expression without the grouping symbols.a(a - 6)
A. a2 + 6a
B. a2 - 6a
C. a - 6a
D. a2 - 6
Answer: B
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Find the sum of the n terms of the indicated arithmetic sequence.40, 51, 62, . . . ; n = 10
A. 895 B. -695 C. 695 D. -95
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 black on a light gray background.
Let A be the 3 × 3 matrix that represents this figure digitally. Find the matrix which represents the negative image of the picture represented by A.
A. 
B. 
C. 
D. 
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = -5, y = -4; (-5, -4) B. inconsistent C. x = -5, y = 4; (-5, 4) D. x = 4, y = -5; (4, -5)
All points in a triangular shaped grassy area where a goat could be staked and not leave the grass but have the most grazing area.
What will be an ideal response?