Real-Life Linear Equations: Translate and Identify Variables

A store sells pencils for $0.50 each. If you buy x pencils and spend $4.00, how many pencils did you buy?

• 8

• 12

• 10

• 6

Maria has twice as many marbles as John. If John has y marbles, write an equation to represent the number of marbles Maria has.

• M = y

• M = 3y

• M = y/2

• M = 2y

A car rental company charges a flat fee of $20 plus $0.15 per mile driven. If you drove m miles and paid $35, how far did you drive?

• 120 miles

• 50 miles

• 75 miles

• 100 miles

A gardener is planting flowers in rows. If he plants x flowers in each row and has 5 rows, write an equation to find the total number of flowers planted.

• total flowers = x + 5

• total flowers = 5x

• total flowers = 5 - x

• total flowers = 5 + x

Tom has $50. He spends some amount, represented by x, on a video game. Write an equation to find out how much money he has left.

• 50 + x

• x - 50

• 50 - x

• 50 * x

A book costs $15. If you buy b books and spend a total of $60, how many books did you buy?

• 5

• 3

• 4

• 6

A recipe requires 2 cups of flour for every batch of cookies. If you want to make b batches, write an equation to find the total cups of flour needed.

• total_cups_of_flour = b + 2

• total_cups_of_flour = 2 * b

• total_cups_of_flour = 2 / b

• total_cups_of_flour = 2 - b

Sarah is 3 years older than her brother. If her brother is a years old, write an equation to express Sarah's age.

• Sarah's age = a + 3

• Sarah's age = 3a

• Sarah's age = a + 5

• Sarah's age = a - 3

A movie ticket costs $12. If you buy t tickets and spend a total of $48, how many tickets did you buy?

• 4

• 2

• 3

• 5

A train travels at a speed of 60 miles per hour. If it travels for h hours, write an equation to find the total distance traveled.

• distance = 60 + h

• distance = 60h^2

• distance = 60h

• distance = h/60