Part a: explain why x = 5 makes 4x − 1 ≤ 19 true but not 4x − 1 < 19. (5 points) part b: what value from the set {6, 7, 8, 9, 10} makes the equation 5x + 2 = 47 true? show your work. (5 points)

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Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.