Translate Real-Life Scenarios into Linear Equations

A store sells pencils for $0.50 each. If you buy x pencils, how much do you spend? Write the equation for the total cost.

• total cost = 0.50 + x

• total cost = 0.50 * x

• total cost = x + 0.50

• total cost = 0.50 / x

Maria has 3 times as many marbles as John. If John has y marbles, express the number of marbles Maria has in terms of y.

• 2y

• y/3

• 4y

• 3y

A car rental company charges a flat fee of $20 plus $0.15 per mile driven. Write an equation to represent the total cost C for driving m miles.

• C = 15 + 0.15m

• C = 20 - 0.15m

• C = 20 + 0.10m

• C = 20 + 0.15m

Tom is saving money to buy a video game that costs $60. If he saves $5 each week, how many weeks will it take him to save enough money? Write the equation for this situation.

• 15 weeks

• 12 weeks

• 10 weeks

• 20 weeks

A gardener is planting flowers in rows. If he plants x flowers in each row and has 5 rows, how many flowers does he plant in total? Write the equation for the total number of flowers.

• total flowers = 5x

• total flowers = 5 + x

• total flowers = x + 5

• total flowers = 10x

A book costs $15, and you have a budget of b dollars. Write an equation to find out how many books you can buy.

• number of books = b / 15

• number of books = b + 15

• number of books = 15 - b

• number of books = b * 15

Sarah is 4 years older than her brother. If her brother is a years old, express Sarah's age in terms of a.

• a - 4

• a + 2

• a + 4

• a + 1

A recipe requires 2 cups of flour for every 3 cups of sugar. If you have s cups of sugar, how many cups of flour do you need? Write the equation for this relationship.

• (3/2) * s

• s + 2

• (2/3) * s

• s / 2

A train travels at a speed of 60 miles per hour. If it travels for t hours, how far does it go? Write the equation for the distance traveled.

• distance = 60t

• distance = 60 + t

• distance = 60t^2

• distance = 30t

A school is organizing a field trip. Each student pays $10, and there are n students. Write an equation to find the total amount collected for the trip.

• total_amount = 10 / n

• total_amount = 10 - n

• total_amount = 10 * n

• total_amount = n + 10