Solve the problem.A brick staircase has a total of 17 steps. The bottom step requires 110 bricks. Each successive step requires 5 less bricks than the prior one. How many bricks are required to build the staircase?
A. 2550 bricks
B. 1190 bricks
C. 1147.5 bricks
D. 2380 bricks
Answer: B
Mathematics
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Factor completely.(x + y)3 + (x - y)3
A. 2x(x2 - 3y2) B. x(x2 - 3y2) C. 2x(x2 + 3y2) D. x(x2 + 3y2)
Mathematics
Use the theorem on bounds to establish the best integral bounds for the roots of the equation.4x3 - 8x - 1 = 0
A. -2 < x < 2 B. -3 < x < 1 C. -1 < x < 4 D. -1 < x < 1
Mathematics
Simplify.5 ? (2 + 3)2 - 4 ? (6 - 3)2
A. 1089 B. 89 C. 481 D. 133
Mathematics
Provide an appropriate response.Solve the system of equations using the addition method:5x + y = -3-15x - 3y = -6
A. x = 0, y = -3
B. dependent; many solutions
C. x = 
, y = 0
D. inconsistent; no solution
Mathematics