Evaluate the polynomial.-5x + 8for x = 7
A. -70
B. -27
C. 3
D. -43
Answer: B
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Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = -3, y = 3, z = 1; (-3, 3, 1) B. x = 1, y = -3, z = 3; (1, -3, 3) C. x = 1, y = 3, z = -3; (1, 3, -3) D. x = -3, y = 1, z = 3; (-3, 1, 3)
Provide an appropriate response.Write the equation of a line that passes through (3, 9) and (0, -7). Write the final answer in the form 
where A, B, and C are integers with no common divisors (other than ±1) and 
A. 3x - 16y = 21 B. 16x - 3y = -21 C. 16x - 3y = 21 D. -16x + 3y = 21
Does the pair of triangles appear to be similar? Write similar or not similar.
A. Similar B. Not similar
Find the equation of the secant line through the points where x has the given values.f(x) = 4 - x2; x = -4, x = 0
A. y = 4x - 4 B. y = 4 C. y = - 4x - 4 D. y = 4x + 4