Science

At the beginning of a laboratory experiment, the temperature of a substance is -12.6 °C. During the experiment, the temperature of the substance decreases 7.5 °C. What is the final temperature of the substance?

A diver went 25.65 feet below the surface of the ocean, and then 16.5 feet further down, he then rose 12.45 feet. Write and solve an expression to find the diver’s new depth.

A city known for its temperature extremes started the day at -5 degrees Fahrenheit. The temperature increased by 78 degrees Fahrenheit by midday, and then dropped 32 degrees by nightfall.

a. What expression can you write to find the temperature at nightfall?

b. What expression can you write to describe the overall change in temperature? Hint: Do not include the temperature at the beginning of the day since you only 

c. What is the final temperature at nightfall? What is the overall change in temperature?

Financial Literacy

On Monday, your bank account balance was -$12.58. Because you didn’t realize this, you wrote a check for $30.72 for groceries.

a. What is the new balance in your checking account?

b. The bank charges a $25 fee for paying a check on a negative balance. What is the balance in your checking account after this fee?

c. How much money do you need to deposit to bring your account balance back up to $0 after the fee?

How much deeper is the deepest canyon on Mars than the deepest canyon on Venus?

Persevere in Problem Solving

What is the difference between Earth’s highest mountain and its deepest ocean canyon? What is the difference between Mars’ highest mountain and its deepest canyon? Which difference is greater? How much greater is it?