Solve the problem.The function I(t) = 40 sin 
represents the amperes of current produced by an electric generator as a function of time t, where t is measured in seconds. Find the smallest value of t for which the current is 20 amperes. Round your answer to three decimal places, if necessary.
A. 0.008
B. 0.017
C. 0.011
D. 0.033
Answer: C
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Solve the problem.Find the tangent line(s) at the pole for the curve 
A. ? = 0 (y = 0), ? = 
[y = (tan
)x], ? = 
[y = (tan
)x]
B. ? = 
[y = (tan
)x], ? = 
(x = 0), ? = 
[y = (tan
)x]
C. ? = 0 (y = 0), ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x]
D. ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x], ? = 
(x = 0), ? = 
[y = (tan 
)x], ? = 
[y = (tan 
)x]
A certain radioactive substance decays exponentially with yearly decay factor of 0.96. There are initially 103 grams present. ? A: Write a formula that gives the amount A, in grams, of the substance remaining after t years. ? B: How much is left after 7 years? Round your answer to two decimal places. ? C: Plot the graph of A versus t over the first 20 years. ? D: How long will it take until only 26 grams are left? Round your answer to two decimal places.
What will be an ideal response?
Expand the number to its natural form.4.027 × 10-6
A. 0.004027 B. 0.00000427 C. 0.000004027 D. 0.0000004027
Evaluate.
dx
A. 3
B. 
C. - 
D. 