The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. Use the graph to answer the question.
At what time was the temperature 72°?
A. 9 a.m. and 10 a.m.
B. 10 a.m.
C. 6 p.m.
D. 9 a.m.
Answer: D
Mathematics
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Solve the equation.(x - 5)2 + x2 = (x + 5)2
A. {-20} B. {0, -20} C. {0, 20} D. {20}
Mathematics
Rewrite f(x) = (ax + b)/(x + c) in f(x) = a + d/(x + c) form.f(x) = 
A. f(x) = 3 - 
B. f(x) = 3 - 
C. f(x) = 3 + 
D. f(x) = 3 + 
Mathematics
Solve.The intensity of a radio signal from the radio station varies inversely as the square of the distance from the station. Suppose the the intensity is 8000 units at a distance of 2 miles. What will the intensity be at a distance of 10 miles? Round your answer to the nearest unit.
A. 320 units B. 284 units C. 303 units D. 346 units
Mathematics
Perform the indicated operation and simplify.
+ 
A. 
B. 
C. 1
D. 
Mathematics