Simplify. Assume that all variables represent positive real numbers.4
+ 4
A. 28x
B. 28
C. 7
D. 4
Answer: B
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Solve the problem.When interest is compounded continuously, the balance in an account after t years is given by 
, where P0 is the initial investment and k is the interest rate. Suppose that P0 is invested in a savings account where interest is compounded continuously at 4% per year. Express P(t) in terms of P0 and 0.04.
A. P(t) = P00.04t B. P(t) = P0e4t C. P(t) = P0e0.04t D. P(t) = P0e0.04
Without actually solving the equation, list all possible numbers that would have to be rejected if they appeared as potential solutions. 
= 
A. 0, 18, - 
B. 18, 
C. 18, - 
D. There are no numbers that would have to be rejected.
The function f is one-to-one. Find its inverse.f(x) = 6x
A. f-1(x) = -6x
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 6x
Solve the rational inequality and graph the solution set on a real number line. Express the solution set in interval notation. 
? 0
A. (-?, 1] ? [3, ?)
B. (-?, 1) ? (3, ?)
C. (-?, -3) ? (-1, ?)
D. (-?, -3] ? (-2, -1) ? [1, ?)