7th grade Unit 2 Study Guide (Expressions)

7. 7. What is the expression for "12 less than half a number"?

• 2n - 12

8. 8. How do you express "the cost of strawberries if they are $2 per pound"?8

• 2x

• x + 2

• 2 + x

• x - 2

9. What is the expression for "the amount of money in Charlotte's bank account after a $100 deposit"?

• x + 100

• x - 100

• 100 - x

• 100x

• -16

• 16

• -32

• 32

4. 4. Translate "a decreased by 10" into an algebraic expression.

• x - 10

• 10x

• 10 - x

6. 6. What is the expression for "the sum of triple a number and 8"?

• 3 + 8x

• 3x

• 3x -8

• 3x + 8

7. How do you express "twelve less than half a number" in algebraic terms?

• 12- 2x

• x + 12

13. 13. What is the simplified form of the expression: -6a + 15 - 14a + 8?

• -20a + 23

• -8a + 23

• -20a + 7

• -8a + 7

34. 34. What is the simplified form of the expression 18y + 4 - 12y?

• 2(3y + 2)

• 10y

• 2(5y - 2)

• 2(y-4)

38.Simplify the expression (8m - 3) + (7m + 16).

• 15m + 13

• 15m - 13

• 15m + 19

• 15m - 19