Match the system of inequalities with one of the graphs.x2 + y2 ? 64y ? 5x
A. 
B. 
C. 
D. 
Answer: A
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Solve. Write the solution set using set-builder notation and using interval notation. Graph the solution set. 
? 3
A. {k
k ? 9}; [9, ?)
B. {k
k > 9}; (9, ?)
C. {k
k ? 9}; (-?, 9]
D. {k
k < 9}; (-?, 9)
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
Find the exact value of the expression or state that it does not exist.sec
A. 
B. 0
C. 2
D. 1
State the phrase as a mathematical expression. Use x to represent the variable.A number increased by seven
A. x - 7 B. 7x C. 7 D. x + 7