Algebra I Leap

What word phrase can you use to represent "5x + 2"?

• five times the sum of a number x and two

• two times the sum of a number x and five

• a number x times the sum of five and two

• the sum of five times a number x and two

If y = 7x +2, what is y when x = 4?

• 76

• 28

• 30

• 13

What is an algebraic                     expression for                 "the difference of r and 3"?

• r/3

• r + 3

• r - 3

• 3r

Write the phrase as an expression.
twice a number x plus 8

• 2 + 8x

• 2x + 8

Kevin has 4 full boxes of new pencils and 3 used pencils.  Altogether he has 23 pencils.  How many pencils are in each box?  Which equation represents the word problem?

• 4x = 23

• 3x = 23

• 4 + x + 3 = 23

• 4x + 3 = 23

Sandy had 8 apples.  She gave some to George.  Now she has 3 apples.  How many apples did she give George?  Which equation best represents the word problem above?

• 8 + x = 3

• 8 - x = 3

• 8x = 3

• 8/x = 3

2x=14

• 3

• 7

• 28

• 14

Which is the variable in the expression 2p x 8

• 8

• x

• p

• 2

Can you figure out the unknown value in the following statement?
 S + 3 = 10

• 3

• 2

• s

• 7

Which is the variable in the expression 6c + 4

• c

• 6

• +

• 4