exam Maths Puzzle Numerical Ability

Whats the answer to |2x + 6| - 4 = 20?

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exam Other Question
A ranch has 132 cows. You pick 32 of them at random and find that 18 of those cows have spots. Predict the numbe of cows on the ranch that have spots.






Thanks so much!!!!! Multiply and match your result to the correct answer below:
(z – 8)(z + 8)
A)z2 + 16
B)z2 – 64
C)z2 – 16
D)z2 – 16y – 64