Find the function value. If it is undefined, say so. tan 180°
A. 1
B. Undefined
C. 0
D. -1
Answer: C
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Solve the problem.A formula relating an athlete's vertical leap V, in inches, to hang time t, in seconds, is V(t)= 48t2. A professional basketball player has a vertical leap of 38 inches. What is his hang time? Round your answer to the nearest tenth of a second.
A. 0.8 sec B. 0.9 sec C. 0.6 sec D. 1 sec
Solve the following system by any appropriate method. If there is no real number solution, so state.x + y = 7x2 + y2 = 2
A. (2, 
), (2, -
), (-2, 
), (-2, -
)
B. (7, 2), (7, -2), (-7, 2), (-7, -2)
C. (7, 
), (7, -
), (-7, 
), (-7, -
)
D. no real solution
Write the new function.The linear function f(x) = 231x + 6320 provides an approximation of the annual cost (in dollars) to rent an apartment at the Leisure Village Retirement Community, where x = 1 represents 1974, x = 2 represents 1975, and so on. Write a new function, g(x), that yields the same f(x)-values when the exact year number is entered.
A. g(x) = 231(x - 1973) + 6320 B. g(x) = 231(1973 - x) + 6320 C. g(x) = 231(1974 - x) + 6320 D. g(x) = 231(x - 1974) + 6320
Find the slope of the line that goes through the given points.(-8, 9), (2, -7)
A. - 
B. - 
C. - 
D. - 