1.   Three more than the product of 6 and a number is 51. Write an equation and find the number.
    A. 3 + 6n = 51; 15
    B. 6 + n + 3 = 51; 42
    C. 6n + 3 = 51; 8
    D. 3n(6) = 51;
    Hint

  2.   Find a solution to the equation using guess-check-and-improve.
t · (t + 8) = 4,473
    A. t = 61
    B. t = 62
    C. t = 59
    D. t = 63
    Hint

  3.   Find a solution to the equation using guess-check-and-improve.
11xx2 = 18
    A. x = 10 (18 is also a solution)
    B. x = 9 (2 is also a solution)
    C. x = 18 (11 is also a solution)
    D. x = 11 (9 is also a solution)
    Hint

  4.   Find a solution to the equation using guess-check-and-improve.
8b + 17 = 41
    A. b = 3 B. b = 17
    C. b = 18 D. b = 1
    Hint

  5.   Which equation would it be easiest to solve using the backtracking method?
    A. r2 + r = 15 B.
    C. D. r · (4 – r) = 32
    Hint



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