Find the indicated derivative.Find y " if y = 7 sin x.
A. y " = 49 sin x
B. y " = 7 cos x
C. y " = 7 sin x
D. y " = - 7 sin x
Answer: D
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Write the logarithmic equation in its equivalent exponential form.log7 49 = 2
A. 27 = 49 B. 492 = 7 C. 749 = 2 D. 72 = 49
Determine whether the relations represent functions. Identify the domain and range of each relation. 
A. not a function B. function domain:{24, 48, 72, 96} range: {4, 8, 12, 16} C. function domain: {4, 8, 12, 16} range: {24, 48, 72, 96}
Solve the problem.The number of periods needed to double an investment when a lump sum is invested at 2%, compounded semiannually, is given by n = log1.01 2. Use the change of base formula to find n, rounded to the nearest tenth.
A. 69.7 periods B. 72.7 periods C. 65.7 periods D. 74.7 periods
Write the expression in expanded form.112
A. 11 + 11 B. 11 ? 11 C. 11 ? 11 ? 11 D. 11 ? 2