Solve the problem.A brick staircase has a total of 15 steps The bottom step requires 114 bricks. Each successive step requires 5 fewer bricks than the prior one. How many bricks are required to build the staircase?
A. 1147.5 bricks
B. 2370 bricks
C. 1185 bricks
D. 2235 bricks
Answer: C
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Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 4 
+ 2xy 
A. 6xy5
B. 6x2y5
C. 10 xy4
D. 10x2y4
Provide an appropriate response.Consider the graphs of y = cos-1 x and y = sin-1 x. Does it make sense that the derivatives of these functions are opposites? Explain.
What will be an ideal response?
Solve the problems.The First Nations Bank pays 3
% interest per year on growth fund accounts. What is the annual income on a growth fund account of 
Round to the nearest dollar.
A. $2,242 B. $1,966,667 C. $22,420 D. $196,667
Write a polar equation of the conic that has a focus at the origin, eccentricity  FIGURE 1.png)
, and directrix y = -7. Identify the conic.
What will be an ideal response?