Real-Life Algebra: Solve and Interpret Linear Equations

A store sells pencils for $2 each. If you buy x pencils, how much do you spend? Write the equation and interpret the solution when x = 5.

• $20

• $10

• $15

• $5

Maria has 3 times as many marbles as John. If John has y marbles, write an equation for the number of marbles Maria has and find out how many she has if y = 4.

• 12

• 15

• 10

• 8

A car rental company charges a flat fee of $30 plus $0.50 per mile driven. Write an equation for the total cost C if you drive m miles. What is the cost if m = 100?

• 100

• 120

• 80

• 50

A gardener is planting flowers in rows. If he plants x flowers in each row and has 12 rows, write an equation for the total number of flowers. How many flowers are there if x = 10?

• 110

• 120

• 100

• 130

A book costs $15, and you have a budget of b dollars. Write an equation to find out how many books you can buy. How many can you buy if b = 60?

• 2

• 3

• 5

• 4

A recipe requires 2 cups of flour for every 3 cups of sugar. Write an equation relating flour f and sugar s. How much flour is needed if s = 9?

• 6 cups of flour

• 3 cups of flour

• 4 cups of flour

• 8 cups of flour

A swimming pool is being filled at a rate of 5 gallons per minute. Write an equation for the total gallons g after t minutes. How many gallons are there after t = 20?

• 120 gallons

• 80 gallons

• 50 gallons

• 100 gallons

A concert ticket costs $50, and you want to buy t tickets. Write an equation for the total cost C. What is the total cost if t = 3?

• 200

• 75

• 100

• 150

A train travels at a speed of 60 miles per hour. Write an equation for the distance d traveled in t hours. How far does it travel in t = 2?

• 100 miles

• 80 miles

• 150 miles

• 120 miles

A recipe calls for 4 eggs for every 2 cups of milk. Write an equation relating eggs e and milk m. How many eggs are needed if m = 6?

• 8 eggs

• 10 eggs

• 12 eggs

• 14 eggs