Solve the problem.A building 240 feet tall casts a 40 foot long shadow. If a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth of a degree)? (Assume the person's eyes are 4 feet above ground level.)
A. 80.54°
B. 80.24°
C. 80.38°
D. 9.76°
Answer: C
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Find the sum of the first 5 terms of the geometric sequence 2, -4, 8, ...
Fill in the blank(s) with the appropriate word(s).
Simplify the expression.
?
?
Write the answer without using negative exponents. Assume that all variables are restricted to those numbers for which the expression is defined.
What will be an ideal response?
Find the foci of the ellipse.7x2 + 2y2 + 14x - 16y + 25 = 0
A. (-1 + 
, 4) , (-1 - 
, 4)
B. (-1, 4 + 
) , (-1, 4 - 
)
C. (1, -4 + 
) , (1, -4 - 
)
D. (-1, 4 + 
) , (-1, 4 - 
)
The ? shape in the figure below is shown using 9 pixels in a 3 × 3 grid. The color levels are given to the right of the figure. Use the matrix 
that represents a digital photograph of the ? shape to solve the problem.
Adjust the contrast by leaving the black alone and changing the light grey to dark grey. Use matrix addition to accomplish this.
A. 
+ 
= 
B. 
+ 
= 
C. 
+ 
= 
D. 
+ 
= 