Solve the problem. Round your answer to the nearest tenth.The roof of a building is in the shape of the top half of the hyperbola y2 - x2 = 23, where x and y are in meters. Refer to the figure and determine the distance, w, between the two outside walls. 
a = 8.0 m b = 8.0 m
A. 12.8 m
B. 41.0 m
C. 9.3 m
D. 6.4 m
Answer: A
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Solve the problem.The number of students receiving a diploma from a local high school for the years 2000 through 2035 can be projected by the function y = -0.275x2 + 6.05x + 260, where x is the number of years after 2000.a. Is the vertex of the graph of this function a maximum or a minimum?b. Find the input and output at the vertex. Round to the nearest tenth when appropriate.
A. a. minimum b. (15, 293.3) B. a. maximum b. (11, 393.3) C. a. maximum b. (11, 293.3) D. a. minimum b. (11, 293.3)
Find the sum or difference. Write the answer in standard form.3
- (7
+ i) + 9i - (-2
+ 9i)
A. -2
- i
B. -2
+ i
C. -2 - 17i
D. 2 - 17i
In a 30°-60°-90° triangle, the hypotenuse has a length of 20 cm. Find the exact perimeter of this triangle.
A. 
B. 
C. 
D. 
Assume that Visa charges Francesca 1.8% per month on her unpaid balance. Find the interest owed to Visa when her unpaid balance for the month is $1250. Round your answer to two decimal places.
A) $23.50 B) $21.50 C) $22.50 D) $24.50 E) $20.50