Use the properties of logarithms to expand the quantity. 
b. 
Mathematics
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Decide whether the given set of numbers is a commutative group under the given operation.Natural numbers; subtraction
A. Yes B. No
Mathematics
Find the percent change if a quantity changes from P1 to P2. Round your answer to the nearest tenth if appropriate.P1 = $18, P2 = $55
A. -67.3 B. 205.6 C. -205.6 D. 67.3
Mathematics
Find the equation of the line. Write the equation using standard notation.Through (-4, -2); parallel to y = 8
A. x = -2 B. y = -2 C. y = -4 D. x = -4
Mathematics
Solve the system by graphing. If there isn't a unique solution to the system, state the reason.8x + y = 0-8x + y = -16
A. (1, 16) B. (1, -8) C. (-1, -8) D. (-1, 8)
Mathematics