Exploring Writing and Solving Equations

The video tutorial by Mr. Peterson covers how to write and solve equations by defining variables and using them in various real-world examples. It includes problems related to test scores, elevation, costs, bank balances, birthday money, temperature changes, population comparisons, student teams, yard gains, granola bars, and travel time. Each example demonstrates the process of setting up equations, substituting values, and solving for unknowns, emphasizing the importance of proper labeling and understanding of mathematical operations.

If Kelly's test score is 88 and it is 6 points higher than Michelle's, what is Michelle's score?

• 84

• 82

• 80

• 86

The lowest point in Louisiana is 543 feet lower than the highest point. If the lowest point is at -8 feet, what is the elevation of the highest point?

• 535 feet

• 543 feet

• 551 feet

• 531 feet

If a sweater and a hat together cost $32, and the hat costs $8, how much does the sweater cost?

• $24

• $20

• $22

• $26

After withdrawing $40, your account balance is $287. What was your original balance?

• $300

• $327

• $320

• $310

If Leticia has $115 after receiving $25 for her birthday, how much did she have before?

• $95

• $85

• $100

• $90

If the temperature rose by 12 degrees to reach 7 degrees, what was the starting temperature?

• -7 degrees

• 0 degrees

• -3 degrees

• -5 degrees

The population of South Africa is 44 million, which is four times the population of Greece. What is the population of Greece?

• 12 million

• 10 million

• 9 million

• 11 million

A class of 30 students is divided into equal teams of 5 students each. How many teams are there?

• 6

• 5

• 7

• 4

A team gains 15 yards over several plays with an average gain of 5 yards per play. How many plays were there?

• 3

• 2

• 4

• 5

If Brad paid $5 for granola bars that cost $0.50 each, how many bars did he buy?

• 9

• 12

• 8

• 10