Algebraic Expressions & Substitutions

Which expression matches the following scenario:

There are 5 gallons of lemonade in the container. How much is remaining in the container after Coach Miller pours g gallons for the players?

• $5-g$
  

• $5+g$

• $\frac{5}{g}$

• $g-5$

Which expression represents the scenario below?

Hannah is building a fence around her yard. She already had 5 feet of fencing. Each day she completes 10 feet of fencing.

• $10d-5$

• $5+10d$

• $5d+10$

• $\frac{10}{d}+5$

Hannah is building a fence around her yard. She already had 5 feet of fencing. Each day she completes 10 feet of fencing. If she has to build a total of 55 feet of fencing to surround her yard, how many days will it take her?

• 4 days

• 5 days

• 6 days

• 7 days

The charge for ice skating is $3 for the skate rental and $2 per hour to skate. How much will you pay if you skate for 2 hours?

• $4

• $6

• $7

• $9

The charge for ice skating is $3 for the skate rental and $2 per hour to skate. How much will you pay if you skate for 3.5 hours?

• $5

• $10

• $11

• $15

A birthday party at the skating rink costs $60 to reserve a party area and $2.50 per guest for skating and skate rental. How much will a party cost if you invite 8 guests?

• $60

• $70

• $80

• $90

A birthday party at the skating rink costs $60 to reserve a party area and $2.50 per guest for skating and skate rental. How much will a party cost if you invite 40 guests?

• $120

• $160

• $100

• $135

Evaluate the expression 15x + 4 for

 $x=-1\frac{1}{2}$  

•  $-18\ \frac{1}{2}$  

•  $-17\ \frac{1}{2}$  

•  $20\ \frac{1}{2}$  

•  $26\ \frac{1}{2}$  

Evaluate the expression 3.2x - 5 for

 $x=-9$  

• 23.8

• -33.8

• -28.8

• -23.8

Evaluate the expression 3.2x - 5 for

 $x=4.5$  

• 14.4

• 9.4

• 19.4

• -21.4