Solving Two-Step Equations and Writing Equations

You bought a magazine for $5 and four erasers. You spent a total of $25. How much did each eraser cost?  (Define 'n' and write the equation.) 

• n=total cost of erasers; 5 + 4n = 25

• n=cost of 1 eraser; 5 - 4n = 25

• n=cost of 1 eraser; 5n + 4 = 25

• n=cost of 1 eraser; 5 + 4n = 25

3f - 12 = -3

• 3

• -3

• 11

• 12

Which equation matches the following situation? 331 students went on a field trip. Six buses were filled and 7 students traveled in a car. How many students were in each bus?

• n= # of students in each bus; 6n + 7 =331

• n=# of buses; 6n + 7 =331

• n= # of students in each bus; 6 + 7n =331

• n= # of students in each bus; 6n - 7 =331

A taxi charges $3, plus $1.50 for each mile traveled. Mr. Maxwell rode in the taxi from his home to the airport and was charged $30. How many miles does Mr. Maxwell live from the airport? (Write an equation first and solve)

• 18 miles

• 20 miles

• 22 miles

• m=3

• m=-4

• m=-1

• All real numbers

• 2

• -2

• 8

• 8

Mathematical Equivalence

ON

• x=-10

• x=2

• No Solution

• All Real Numbers

• x=3

• x=2

• x=-2

• x=1

Mathematical Equivalence

ON