Perform the indicated operations. Write the resulting polynomial in standard form.(2x2 + 4x + 7) + (2x2 + 9x + 3) - (5x + 2)
A. 4x2 + 8x + 12
B. 2x2 + 8x + 12
C. 2x2 + 8x + 8
D. 4x2 + 8x + 8
Answer: D
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Which of the following is the best measurement system to estimate the speed of an car? ?
A. ?miles per minute B. ?miles per hour C. ?feet per mile D. feetper minute E. ?miles per second
Indicate the metric unit of measurement that would be best used to express the area of the object.The floor of your garage
A. square millimeters B. square centimeters C. square kilometers D. square meters
The following system does not have a unique solution. Solve the system.
A. infinitely many solutions of the form x = - 
- 
z, y = - 
+ 
z, z = z
B. infinitely many solutions of the form x = 
+ 
z, y = 
- 
z, z = z
C. x = 0, y = 0, z = 
D. inconsistent system, no solution
Write the exponential equation as an equation involving a common logarithm or a natural logarithm.ex = 17
A. ln 17 = x B. ln x = 17 C. log17 x = e D. logx e = 17