Pre Algebra: Comparing Fractions

1. Which of the following groups contains three fractions that are equal?

ANSWER: (D)$\dfrac{15}{18}$, $\dfrac{5}{6}$ , $\dfrac{35}{42}$

2. Which of the following numbers is between 0.78 and 0.89? 

ANSWER: (B)$-3\dfrac{3}{4}$

3. Which of the following numbers is closest to -3.8?

ANSWER: (C) $-4$