Determine algebraically whether the graph is symmetric with respect to the x-axis, the y-axis, and the origin.xy = -5
A. Origin only
B. y-axis only
C. x-axis, y-axis, origin
D. x-axis only
Answer: A
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Use your calculator to solve the problem.When a ball with coefficient of restitution e is dropped from a height h meters onto a large flat surface, the time t from the first impact until the ball stops bouncing is given by t = 
seconds. Find the time it takes a ball with coefficient of restitution 0.28 to stop bouncing if it is dropped from a height of 79.3 centimeters. (Round to the nearest tenth.)
A. 22.4 seconds B. 2.1 seconds C. 20.7 seconds D. 2.2 seconds
Solve the problem. Use a calculator with an LN or a LOG key.In chemistry, the pH of a substance is defined by 
where 
is the hydrogen ion concentration in moles per liter. Find the 
of a sample of lake water whose 
is 3.05 × 10-9 moles per liter. (Round to the nearest tenth.)
A. 7.3 B. 6.4 C. 10.1 D. 8.5
Find the slope and the y-intercept of the equation.-4x + 6y = 6
A. 
; (0, 1)
B. -1; (0, 1)
C. 1; (0, 1)
D. - 
; (0, -1)
Solve the system by the addition method.x2 + y2 = 2525x2 + 9y2 = 225
A. {(0, 5), (0, -5)} B. {(0, 3), (0, -3)} C. {(5, 0), (-5, 0)} D. {(3, 0), (-3, 0)}