For the given function, find all asymptotes of the type indicated (if there are any)f(x) = 
, vertical
A. x = 1, x = -1
B. x = 5
C. x = -1
D. x = 1
Answer: A
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Match the equation with the surface it defines.
+ 
= 
A. Figure 3 B. Figure 2 C. Figure 1 D. Figure 4
Solve the system. If there is an unlimited number of solutions, find one of them.2x + 6y + 8z = 126x + 3y + 4z = -21x + y + z = -6
A. x = 3, y = 1, z = -6 B. x = -6, y = 3, z = 1 C. Unlimited: x = -6, y = 1, z = 3 D. Inconsistent
The pH of a solution is given by the formula 
, where 
is the concentration of hydrogen ions in moles per liter in the solution. Use this formula to solve the problem.The pH value of a substance is 5.42. Find the hydrogen-ion concentration for this substance.
A. 263,026.8 B. 0.0000038 C. 1.7 D. 0.2
Evaluate the piecewise function at the given value of the independent variable.f(x) =
; f(1)
A. -2 B. 2 C. 18 D. 1