Solve the problem.A faucet is used to add water to a large bottle that already contained some water. After it has been filling for 5 seconds, the gauge on the bottle indicates that it contains 25 ounces of water. After it has been filling for 13 seconds, the gauge indicates the bottle contains 57 ounces of water. Let y be the amount of water in the bottle x seconds after the faucet was turned on. Write a linear equation that models the amount of water in the bottle in terms of x.
A. y = 4x + 44
B. y = -4x + 45
C. y = 
x + 
D. y = 4x + 5
Answer: D
Mathematics
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, 
, - 
, 
(reciprocals of squares with alternating signs)
A. an = 
B. an = 
C. an = 
D. an = 
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A. 0.512 B. 0.358 C. -0.035 D. -0.651
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Add. Write the answer in lowest terms as a mixed number.
A. 50
B. 51
C. 52
D. 51
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Solve the problem.A vibrating wire has a vertical displacement given by 
Assume b and t are constants. Write y as a cosine function of x.
A. y = 6 cos(2?x + bt) B. y = cos(2?x - bt) C. y = 12 cos(2?x + bt) D. y = 6 cos(2?x - bt)
Mathematics