Unit 1-4 in Review

Ashley sells beads. Her customers choose an amount of beads and offer a price for them. Which offer below gives Ashley the greatest amount of money per pound of beads?

• 
  

  $6\ \frac{\text{1}}{\text{2}}pounds\ for\ 3\ \frac{1}{4}dollars$
  

• $4\ pounds\ for\ 2\ \frac{1}{2\ }\ dollars$

• $1\ \frac{1}{4}pound\ for\ \frac{3}{4\ }dollar$

• $\frac{3}{4}\ pound\ for\ \frac{1}{2\ }dollar$

Priscilla works at a clothing store in the mall. The graph below shows how much break time she gets while at work.Which of the following shows the rate at which Priscilla gets break time at work?

• 0.25 minutes of break time for every hour at work

• 4 minutes of break time for every hour at work

• 15 minutes of break time for every hour at work

• 25 minutes of break time for every hour at work

The table follows the rule y = kx, where k is the constant of proportionality.What is the value of k?

• 4

• 9

• 15

• 26

Melina is playing an arcade game. The graph below shows the relationship between the total number of games won and the total number of prize tickets received.What does the point (1,6) mean in terms of the arcade game?

• In one visit to the arcade, Melina won the game 6 times.

• For every game that Melina wins, she receives 6 tickets.

• Melina receives a ticket for every 6 games that she wins.

• Melina has to play the game 6 times in order to win once.

The graph below shows the cost, in dollars, of filling a reusable jug with filtered water.What does the point (4, 1) on the graph represent?

• It takes 4 jugs to fit 1 gallon of water.

• Filtered water costs $4.00 per gallon.

• The cost of 4 gallons of water is $1.00.

• It takes 4 gallons of water to fill up 1 jug.

Both r and s are numbers on the number line.Which expression represents the distance between r and s on the number line?

• |r + s|

• |r| − |s|

• |r − s|

• |r| + |s|

What is the value of 1-(2+(3-7))?

• -5

• 3

• 9

• 13

Which of these expressions has the greatest value?

• 4 ÷ −4

• 4 × −4

• 4 − −4

• 4 + −4

Which of these expressions has the least value?

• −9 − −3

• −9 + −3

• −9 ÷ −3

• −9 × −3

Mikey observed the hair color of each of his classmates and recorded the data in the following table.

Mikey wants to use this data to make a circle graph. What fraction of the circle should be used to represent his classmates with black hair?

• $\frac{3}{7}$

• $\frac{6}{13}$

• $\frac{1}{2}$

• $\frac{2}{3}$