Write a numerical expression for the phrase and simplify it.The product of -5 and 9, subtracted from -1
A. -1 + (-5)(9); -46
B. [-1 - (-5)](9); 36
C. -1 - (-5)(9); 44
D. (-1)(-5)(9); 45
Answer: C
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Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them. 8x - y + 7z = 54-3x - 2z = -18 4y + z = 22
A. x = -2, y = 4, z = 4 B. x = 2, y = 4, z = 6 C. x = 2, y = 6, z = 4 D. Inconsistent
Provide an appropriate response.In a state with a population of 8,000,000 people, the average citizen spends $6,000 on housing each year. What is the total spent on housing for the state? Write your answer in scientific notation.
A. $4.8 × 109 B. $48 × 1010 C. $4.8 × 1010 D. $48 × 1011
The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct.
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A. 
B. ?
C. ?
D. ?
E. ?
Determine which of the following methods is the best choice for solving the given equation: factoring, using the principle of square roots or using the quadratic formula. Then, solve the equation.x2 + 18x = 0
A. Square root principle or factoring; -1, -18
B. Square root principle; 18, 0
C. Factoring; -18, 0
D. Quadratic formula; -18 ± 