Matching Expressions to Word Problems

Which algebraic expression matches the word problem:

Joseph tweets 13 times a day.

• 13d

• 13+d

• 13-d

• 13÷d

Which algebraic expression matches the word problem:

Emanuel has 745 pictures in his phone. His memory is getting full, so he starts deleting 20 pictures every day

• 20d-745

• 745(20d)

• 745-20d

• 745÷20d

Which algebraic expression matches the word problem:

An airplane is flying at 35,000 feet above sea level. The airplane starts to descend at a rate of 2,500 feet per minute. Let 𝑚 be the number of minutes. Which of the following expressions describe the height of the

airplane after any given number of minutes?

• 2,500-35,000m

• 2,500+35,000m

• 35,000-2,500m

• 35,000+2,500m

Ashley posts 17 tweets on her Twitter each day. Roberto posts 21 tweets on his Twitter each day.

Part A: Let d represent the number of days, write an algebraic expression that describe the combined number of tweets for Ashley and Roberto after any given number of days.

Ashley posts 17 tweets on her Twitter each day. Roberto posts 21 tweets on his Twitter each day.

Part B: Write an algebraic expression to describe the difference between number of tweets for Ashley and Roberto after any given number of days.

Tommy posts 11 pictures on Instagram every day. Elizabeth posts 15 pictures on Instagram every day.

Part A: Let d represent the number of days, write an algebraic expression to describe the combined number of posts for Tommy and Elizabeth after any given number of days.

Tommy posts 11 pictures on Instagram every day. Elizabeth posts 15 pictures on Instagram every day.

Part B: After 7 days, how many pictures have Tommy and Elizabeth posted altogether?

Homer and Bart plan to buy one computer for $499.00 strictly for gaming purposes. Games cost $49.99 each.

Part A: Let g represent the number of games, write an algebraic expression to describe how much they will spend before sales tax, based on purchasing the computer and the number of games.

Homer and Bart plan to buy one computer for $499.00 strictly for gaming purposes. Games cost $49.99 each.

Part B: If they purchase one computer and five games, how much do they spend before sales tax?