Add or subtract. Simplify if possible.
- 
A. 7x
B. 0
C. 
D. 
Answer: A
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The augmented matrix is given for a system of equations. If the system is consistent, find the general solution. Otherwise state that there is no solution. 
A. x1 = 15 + 11x3 x2 = -5 - 4x3 x3 is free B. x1 = 5 - 2x2 + 3x3 x2 is free x3 is free C. x1 = 5 -2x2 + 3x3 x2 = -5 - 4x3 x3 is free D. x1 = 15 + 11x3 x2 = -5 - 4x3 x3 = 0
Find the product and write the result in standard form.5i(-9i + 2)
A. 10i + 45i2 B. -45 + 10i C. 10i - 45i2 D. 45 + 10i
Solve and check. Begin by using the addition or multiplication principles of equality to isolate the squared term. 8z2 + 2 = 650
A. 9 B. 325 C. ±9 D. ±10
Solve.The resale value R (in dollars) of a company car after t years is estimated to be given by 
What is the rate of depreciation (in dollars per year) after 5 years?
A. -$15,144/yr B. -$1378/yr C. -$1157/yr D. -$1641/yr