Writing Equations

Harris Publications is having some books printed. The printer charges $800 plus $5 per book. What equation could help me find how many books can be printed for $4,000?

• 800 + 5x = 4000

• 800x + 5 = 4000

• 4000 + 5x= 800

• 800 + 5 = 4000

• 4000 = 800 + 5

Maria and three friends bought some bags of Takis Fuego. They purchased 12 bags of Takis Fuego. Which expression shows the number of bags of Takis Fuego, t, each person can have?

• t + 12 = 3

• t + 12 = 4

• 3t = 12

• 4t = 12

Jose and Maria bought several packages of Slaps candy. Maria has ten less than three times the number of Slaps Jose has. If b represents the number of Slaps Jose has, which equation represents the number of Slaps Maria has?

• 3(b - 10)

• 10 - 3b

• 3b - 10

• 10(3) - b

A plumber charges customers $37 for each hour worked, plus an additional $20 for travel. If w represents the number of hours worked, which expression will calculate the plumber's total charge?

• 37 + 20 + w

• 37w - 20

• 37 + 20w

• 37w + 20

A car costs $45.00 to rent each day, and an additional $0.25 per mile driven. Which expression represents the cost for renting the car 5 days and driving m number of miles?

• 45 + 0.25m

• 45m + 0.25(5)

• 45(5)m + 0.25

• 45(5) + 0.25m

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat.  Write an equation to find out how many hours, h, they rented the Boat if the total cost was $33.

• h = 2(9) + 15

• 33 = 15h + 2

• h = 15(9) + 2

• 33 = 2h + 15

What equation matches this situation?
John wants to buy an MP3 Player that costs $30.98.  How much change did he receive if he gives the cashier $40.

• 40 + c = 30.98

• 30.98 + c = 40

• c - 40 = 30.98

• c - 30.98 = 40

Cheryl gets paid $8 per hour for her job at the record store.  She made a total of $96 last week.  Which equation models this situation?

• 96h = 8

• h/96 = 8

• 8h = 96

• h/8 = 96

Write an equation models the following statement:
 17 less than h equals 42

• 17-h=42

• h-17=42

• h+17=42

• 17+h=42

Ted bought a dolphin poster for $12.  He now has $5.  Which choice models this situation?

• m - 12 = 5

• m - 5 = 12

• m + 5 = 12

• m + 12 = 5