Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.
x = 18
A. {2.08}
B. {-0.48}
C. {-4.50}
D. {-2.08}
Answer: D
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Solve the problem.The function f(x) = 60x computes the number of minutes in x hours. The function g(x) = 24x computes the number of hours in x days. What is (f ? g)(x) and what does it compute?
A. (f ? g)(x) = 84x; It computes the number of minutes plus the number of days in x days. B. (f ? g)(x) = 1440x; It computes the number of days in x minutes. C. (f ? g)(x) = 1440x; It computes the number of minutes in x days. D. (f ? g)(x) = 1440x2; It computes the number of minutes in x days.
Find the values of x that satisfy the given condition for the function.Solve R(x) < 0 if R(x) = 
A. (-?, -1) ? (
, ?)
B. (-?, -3) ? (-1, 
)
C. (-3, -1) ? (
, ?)
D. (-?, -3] ? (-1, 
)
Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.3y = 21 - 4x2x = 27 - 3y
A. {(3, -11)}
B. {(-3, 11)}
C. {
4x + 3y = 21 }
D. ?
Find the area.Find the area of a square measuring 35.8 m on a side.
A. 71.6 m2 B. 143.2 m2 C. 1281.64 m2 D. 2563.28 m2