Read and Write Algebraic Expressions

Which math expression can be used to represent this phrase? 4 less than twice a number n.

• 4−2⋅n

• 2⋅(n−4)

• ​2⋅n−4

• 2⋅n÷4

Translate the word phrase into a math expression.

1 less than a number.

• n + 1

• 15 ÷ n

• 1−n

• n−1

Ali has q quarters. Tom has four more quarters than Ali.  

 

Select the expression that represents the number of quarters Ali and Tom have together. 

• q

• 4

• 5

• q+4

• q-4

The table shows Sandra's weekly earnings, y , based on the number of hours she works. Which equation can Sandra use to calculate her weekly earnings when she works x hours?

• y = 8x

• y = 5x + 40

• y = 10x

• y = 10x + 80

The student council is organizing a school fair. Council members are making signs to show the prices for admission and for each game a person can play.
Let x represent the number of games. Which expression can you use to determine the total amount, in dollars, a person pays for admission and playing x games?

• 2.25

• 2 + 0.25x

• 2.25x

• 2x + 0.25

The table shows Sandra's weekly earnings, y , based on the number of hours she works. Which equation can Sandra use to calculate her weekly earnings when she works x hours?

​ (a)  

• y = 8x

• y = 5x + 40

• y = 10x

• y = 10x + 80

A service club wants to buy tickets to a baseball game. Tickets are available for the grandstand and for the bleachers. Which expression represents the total cost, in dollars, for g grandstand tickets and b for bleachers tickets?

• 375(g + b)      

• 40(g × b)

• 25g + 15b

• 25g × 15b

Daniel is taking a trip with his family and they are staying in a hotel, but cannot decide for how long. The hotel charges a one time reservation fee of $20 and then $80 per night. Which expression represents the cost of staying at this hotel for x number of nights?

• $20+$80x

• ($20+$80)x

• $20x+$80

• $80x-$20

2 times the sum of y and 5

• 62

• 2(y+5)

• 2(6y)

• 2 ∗ y + 5

Which description represents the expression 4−x/3

• 4 times the quotient of a number and 3

• 4 minus a number times 3

• 4 minus the quotient of a number and 3

• 4 added to the product of a number and 3