Open Up Expressions and Equations

2) Solve this equation

t - 7 = 2

• t = 9

• t = 7

• t = 5

• None of these match my answer

Please solve this equation

7x = 84

• x = 77

• x = 91

• x = 588

• None of these match my answer

Please solve this equation Melanie and Julian have 50 dinosaurs in total. Julian has 21 dinosaurs. How many dinosaurs does Melanie have?

• g = 29

• g = 71

• g = 1050

• None of these match my answer

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

x - 12 = 13

• x = 25

• x = 1

• x = 156

• None of these match my answer

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

4a + 7b = 28

• Expression

• Equation

p² + 3p = 10

• Expression

• Equation

7m = 4n

• Expression

• Equation