Algebra 1 Topic 1 Test

Write the phrase as a mathematical expression:

fourteen decreased by a number

Write the phrase as a mathematical expression.

the product of nine and a number

Write the phrase as a mathematical expression:

five more than twice a number

Write the phrase as a mathematical expression:

seven divided by twice a number

Write the phrase as a mathematical expression:

withdrawing $10 every week from an outstanding balance of $400

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 represents the height of the airplane at any given minute?

Joseph tweets 13 times a day. Write an algebraic expression to describe the number of posts after any given number of days d.

Tommy posts 11 pictures on instagram each day. Elizabeth posts 15 pictures on instagram each day. Let t be Tommy's posts and e be Elizabeth's posts, what expression would represent the combined number of pictures they both post after any number of days?

Tommy posts 11 pictures on instagram each day. Elizabeth posts 15 pictures on instagram each day. After 7 days, how many pictures have Tommy and Elizabeth posted together?

• 28

• 182

• 134

• cannot be determinined