Solve the problem.Find a formula for the distance from the point P(x, y, z) to the yz plane.
A. 
B. y
C. x
D. z
Answer: C
Mathematics
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Solve and graph. Write the solution in interval notation.
- 3 ? 9
A. (-?, -3] ? [21, ?)
B. [-3, 15]
C. [ -15, 3]
D. [-3, 21]
Mathematics
Use the properties of logarithms to write the expression as the logarithm of a single expression.ln x2 - 4 ln 
A. ln x3/2 B. 4 C. 0 D. ln x1/2
Mathematics
Solve using elimination.
A. x = 
, y = 
; x = 
, y = - 
or 
, 
B. x = 
, y= - 
; x = 
, y = 
or 
, 
C. x = 
, y = 
; x = - 
, y = - 
or 
, 
D. x = 
, y = - 
; x = - 
, y = 
or 
, 
Mathematics
Solve the following system of equations using the addition method. If both variables cancel out, state your solution as no solution or infinitely many solutions.
x + 
y = 1
x - 
y = 0
A. 
B. no solution
C. 
D. infinitely many solutions
Mathematics