Final: The Freezer
Part of the Numbers & Operations section of Coddy's Pre-Algebra journey. Lesson 58 of 60.
A freezer runs well below zero. Someone switches it off, and from then on it warms by the same amount every hour. This problem asks for its temperature some hours later: name the answer with a letter, build its line from the story, then work it down to one number.
Challenge
A freezer runs at -18 degrees. It is switched off and warms 3 degrees every hour for 4 hours. Find its temperature t after the 4 hours.
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Numbers & Operations
1Working on the Board
Your First AnswerType the Next LineOne Line at a TimeDots and BarsFriendly ProductsRecap: Board Work4Adding Integers
Adding Two NegativesDifferent SignsZero PairsAdding Several IntegersRecap: Adding Integers2Order of Operations
Multiply Before AddingLeft to RightParentheses FirstBrackets Inside BracketsThe Fraction Bar GroupsRecap: Order of Operations5Subtracting Integers
Add the OppositeSubtracting a NegativePlus and Minus in a RowDistance Between NumbersRecap: Subtracting Integers8Square Roots
Perfect SquaresUndoing a SquareRoots in ExpressionsThe Root Sign GroupsBetween Two Whole NumbersRecap: Square Roots11Final Challenges
Final: Every Rule at OnceFinal: Roots and PowersFinal: The FreezerFinal: Over the BarFinal: On the Line