Extra Math Practice #126-130

Which of the following expressions is equivalent to $\dfrac{8x+4}{2x+8}$ ?

A) $x+\dfrac{2}{x}$

B) $4x+\dfrac{1}{2}$

C) $4-\dfrac{14}{x+4}$

D) $4+\dfrac{7}{x+4}$

In a certain game, two teams with five members each compete for the highest team score. A team's score is determined by eliminating the team's greatest and least individual scores and then calculating the average (arithmetic mean) of the remaining three individual scores. The individual scores of nine of the ten players in a game are shown in the table above. What is the lowest integer score Player 10 can have so that Team 2 wins the game?

A fish tank at a pet store contains red and blue fish. The ratio of red fish to blue fish is 4 to 7. After a customer purchases 5 blue fish from the tank, the ratio of red fish to blue fish becomes 3 to 4. How many red fish are in the tank?

The frequency graph above represents the time, in minutes, it took 39 people to complete a word puzzle. Which of the following box plots accurately represents the same data?

5 In the $xy$ -plane, perpendicular lines $m$ and $n$ intersect at the point $(a, b)$ , where $b>a>0$ . If line $m$ passes through the origin, which of the following could be a point on line $n$ ?

A) $(b-a, a-b)$

B) $(a-b, a+b)$

C) $(a+b, a+b)$

D) $(b-a, b-a)$