Tori had 3/5 as many marbles as Dana. Dana gave 9 marbles to Tori so that they would each have the same amount. How many marbles
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Answer:
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
<u>Algebra I</u>
- Slope Formula:
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Find points from table</em>
Point (0, 3)
Point (1, 7)
<u>Step 2: Find slope </u><em><u>m</u></em>
Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>. Rate of change and slope are the same.
- Substitute [SF]:
- Subtract:
- Divide: