Solve the system of equations.7x + 7y + z = 1 x + 8y + 8z = 89x + y + 9z = 9
A. (1, -1, 1)
B. (0, 0, 1)
C. (0, 1, 0)
D. (-1, 1, 1)
Answer: B
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Find the slope then describe what it means in the given situation.The linear function f(x) = -5.9x + 22 models the percentage of people, f(x), who eat at fast food restaurants x years after 2017.
A. m = 5.9; the percentage of people eating at fast food restaurants has increased at a rate of 5.9% per year after 2017. B. m = 22; the percentage of people eating at fast food restaurants has increased at a rate of 22% per year after 2017. C. m = -5.9; the percentage of people eating at fast food restaurants has decreased at a rate of 5.9% since 2017. D. m = -5.9; the percentage of people eating at fast food restaurants has decreased at a rate of -5.9% per year after 2017.
Find the value of the variable that satisfies the equation.2x + x = 24
A. x = 
B. x = 12
C. x = 7
D. x = 8
Write the polynomial in descending order and identify its degree.9 - 8x2 + 6x6 - 3x3 + x
A. 9 - 8x2 + 6x6 - 3x3 + x ; degree 6 B. 9 + x - 8x2 - 3x3 + 6x6 ; degree 6 C. 6x6 + x - 3x3- 8x2 + 9 ; degree 6 D. 6x6 - 3x3 - 8x2 + x + 9 ; degree 6
Solve the inequality.x2 - 3x ? 0
A. (-?, 0] or [3, ?) B. [0, 3] C. (-?, -3] or [0, ?) D. [-3, 0]