Find an equation of variation in which the following are true.y varies jointly as x and z, and y = 54 when x = 6 and z = 3
A. y = 9x
B. y = 3xz
C. y = 5xz
D. y = 
Answer: B
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 0 B. -12 C. 1 D. -4
Mathematics
Solve the equation.log4(2x + 5) - log4(x - 2) = 1
A. 3.125 B. 6.5 C. 2.408 D. No solution
Mathematics
Find the vertex and axis of symmetry of the graph of the function.f(x) = x2 - 13x + 6
A. 
; x = - 
B. (15, 6) ; x = 15
C. 
; x = 
D. (-13, 344) ; x = -13
Mathematics
Use a calculator to approximate the logarithm to four decimal places.log9 0.334
A. -0.4763 B. -2.0036 C. -0.4991 D. 26.9461
Mathematics