Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from the horizontal, and that the projectile is launched from the origin over a horizontal surfaceFind the muzzle speed of a gun whose maximum range is 17.8 km. Round your answer to the nearest tenth.
A. 13.2 km/sec
B. 13.7 km/sec
C. 174.4 km/sec
D. 174.9 km/sec
Answer: A
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Find an expression equivalent to the given expression.
cosh u, where u is a function of x
A. sinh u 
B. sinh u
C. -sinh u 
D. cosh u 
Express the set of real numbers graphed on the number line using an inequality.
A. x > 0 B. x < 0 C. x ? 0 D. x ? 0
Simplify the expression.-9b + 4b
A. -13b B. -5b C. 5b D. -5b2
Write the function f as a set of ordered pairs. Give the domain and range of f.f(9) = 4, f(-8) = 0, f(-5) = -5, f(13) = -8
A. f = {(-5, -8), (0, -5), (9, 4), (13, 13)}; D = {-5, 0, 9, 13}; R = {-8, -5, 4, 13} B. f = {(-8, 4), (0, -8), (4, -5), (9, 13)}; D = {-8, 0, 4, 9}; R = {-8, -5, 13} C. f = {(9, 4), (-8, 0), (-5, 0), (13, 4)}; D = {-8, -5, 9, 13}; R = {0, 4} D. f = {(9, 4), (-8, 0), (-5, -5), (13, -8)}; D = {-8, -5, 9, 13}; R = {-8, -5, 0, 4}