Unit 6 Expressions and Equations

1) Solve this equation

c - 1 = 8

• c = 9

• c = 7

• c = 8

• None of these match my answer

Please solve this equation

m - 3 = 4

• m = 7

• m = 1

• m = 13

• None of these match my answer

Please solve this equation

^c/₉ = 8

• c = 1

• c = 17

• c = ⁸/₉

• None of these match my answer

Please solve this equation

x - 12 = 13

• x = 25

• x = 1

• x = 156

• None of these match my answer

4a + 7b = 28

• Expression

• Equation

p² + 3p = 10

• Expression

• Equation

7m = 4n

• Expression

• Equation

5q² + 2 = 0

• Expression

• Equation

Emma is planning a party and needs to buy some party candies. She has $25 to spend. Each candy costs $5, and she wants to buy n candies. Write an algebraic number to represent the amount of money Emma has after buying the candies. Is this an expression or an equation?

• It's an Expression
  25 - 5n

• It's an Equation
  25 = 5n

• It's an Equation
  25 - 5n = 0

• It's an Expression
  5n

A student has a test where the sum of her math and science scores is 180 points. If the math score is m and the science score is s, write an algebraic number that represents this situation. Is this an expression or an equation?

• It's an Expression
  m + s

• It's an Equation
  m + s = 180

• It's an Expression
  m + s + 180

• It's an Expression
  180 − m − s