Solve the problem.The graph below shows the width of the beach in feet as the tide goes in and out throughout the day. 
A. Independent variable: Time
Dependent variable: Width of beach
B. Independent variable: Width of beach
Dependent variable: Time
Answer: A
Mathematics
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Express the given number in exponential form.3 + 8j
A. 7.42e1.21j B. 7.42e0.359j C. 8.54e0.359j D. 8.54e1.21j
Mathematics
Solve the problem.In a certain medium, sound travels at a speed of 7895 feet per second. How many meters per second does sound travel in this medium? Round to the nearest tenth.
A. 25,895.6 m/s B. 3079.1 m/s C. 2368.5 m/s D. 7184.5 m/s
Mathematics
Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.cot ? = 
, ? < ? < 
Find tan 2?.
A. 
B. - 
C. - 
D. 
Mathematics
Evaluate using a number line.-17 + (-7)
A. -10 B. 10 C. -24 D. 24
Mathematics