Understanding multi-step problems involving non-linear equations in one variable

A store is selling a TV for $389. This is $64 less than the regular price. What is the regular price (r)?

Kendra bought some muffins. They came in 6 identical boxes. Each box had 11 muffins. Which equation, when solved, will tell how many muffins Kendra bought in all?

• 66 ÷m=11
• m×6=11
• m−6=11
• m÷6=11

Shaun has 440 blocks. Christian has 280 more blocks than Shaun. Which equation can be used to b, the number of blocks both boys have combined?

• 440 + 280 = b

• 440 - 280 = b

• 440 + 440 - 280 = b

• 440 + 440 + 280 = b

If 10 students went to Starbucks and ordered their favorite food on one ticket.  The total bill is known as B.  Each student paid $9.45.  What is the equation that shows how they split the bill?

• $9.45/10 = B
• B x 10 = $9.45
• B/ 10 = $9.45
• B - 10 = $9.45

What equation matches this situation?
John wants to buy an MP3 Player that costs $30.  How much change did he receive if he gives the cashier $40.

• 40 + c = 30
• 30 + c = 40
• c - 40 = 30
• c - 30 = 40

The cinema charges $15 for popcorn and an additional $0.10 for each extra squirt of butter. If Joey paid a total of $17, which equation model's this situation?

• 0.10x + 15 = 17

• 15x + 0.10 = 17

• 17x + 0.10 = 15

• 0.10x + 17 = 15

If 9 is subtracted from a number, the result is 15. What is the correct equation?

• 9x = 15

• 9 + x = 15

• x - 9 = 15

• 9 - x = 15

Lisa has 8 more Pokémon cards than Justin. Lisa has 13 cards. Which equation represents this situation?

• y - 8 = 13

• 8y = 13

• y + 8 = 13

• 13 + y = 8

Twelve more than three quarters of a number is equal to thirty six.

• 75x + 12 = 36

• (3/4)x + 12 = 36

• 3x + 12 = 36

• 25x + 12 = 36

A group of 5 friends went to the movies. They had ONE $10-off discount. Each friend spent the same amount on each ticket. They spent a total of $53.75, AFTER the discount was taken off. What was the ORIGINAL price of each movie ticket, BEFORE the discount was taken off?

• *c for cost of each ticket before discount

  5c + 10 = 53.75

  c = $8.75 was the cost of each ticket before the discount

• *c for cost of each ticket before discount

  10c + 5 = 53.75

  c = $4.88 was the cost of each ticket before the discount

• *c for cost of each ticket before discount

  5(c + 10) = 53.75

  c = $0.75 was the cost of each ticket before the discount

• *c for cost of each ticket before discount

  5c - 10 = 53.75

  c = $12.75 was the cost of each ticket before the discount