Use similar triangles to help solve the problem.An airplane ascends 160 feet as it flies a horizontal distance of 1,000 feet. How much altitude will it gain as it flies a horizontal distance of 1 mile? (Hint: 5,280 feet = 1 mile.) Round your answer to the nearest integer.
A. x = 870 ft
B. x = 813 ft
C. x = 845 ft
D. x = 885 ft
E. x = 833 ft
Answer: C
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Find T, N, and B for the given space curve.r(t) = (cosh t)i + (sinh t)j + k
A. T = - 
(tanh t sech t)i + 
j + 
(sech t)k; N = (-sech t)i - (tanh t)k; 
B. T = - 
(tanh t)i + 
j + 
(sech t)k; N = (-sech t)i - (sinh t)k ; 
C. T = 
(tanh t sech t)i + 
j + 
(sech t)k; N = (sech2 t)i - (sinh t)k; 
D. T = 
(tanh t)i + 
j + 
(sech t)k; N = (sech t)i - (tanh t)k; 
Without graphing, find the maximum value or minimum value.f(x) = (x + 1)2 - 1
A. 2 B. 0 C. -1 D. 1
Solve the problem. Round to two decimal places if needed.Find the length of the arc intercepted by a central angle of ? = 60° in a circle of radius r = 4 feet.
A. 4.35 feet B. 4.4 feet C. 4.25 feet D. 4.19 feet
Solve the problem.The following inequality models the range for the monthly average temperatures T in degrees Fahrenheit for a city: 
? 15. Give an interpretation for this inequality.
A. The monthly average temperatures for Chesapeake will range from -59° F to -29° F. B. The monthly average temperatures for Chesapeake will be below 29° F or above 59° F. C. The monthly average temperatures for Chesapeake will range from 29° F to 59° F. D. The monthly average temperatures for Chesapeake will be less than 59° F.