1. What are the types of the following expressions and what do they evaluate to, and why?

• 17 // Number, evaluates to 17.
• 1 + 2 * 3 + 4 // Number, evaluates to 11 because it follows order of operations, therefore, multiplies first then adds.
• 800 / 80 / 8 // Number, evaluates to 1.25. Just performing the operation asked to.
• 400 > 200 // Number, evaluates to 2. Just dividing the numbers and giving solution.
• 1 !== 1 // Boolean, false. This is saying that 1 is not equal to 1, therefore, it is false because 1 does equal 1.
• true || false // Boolean expression, evaluates to true because when using || (OR) that means that just one side has to be true in order to be true.
• true && false // Boolean expression, evaluates to false, because AND needs both sides to be true in order to be true.
• 20 % 6 // Number, evaluates to 2, because % (modulo) is a remainder operator.
• 'a' + 'b' // String, evaluates to ab because it combines both strings together.

2. What will the following return?

• typeof 4// Number
• typeof 'hello'// String
• typeof true // Boolean
• 2 === 1 || 3 === 4 // False

3. Create a truth table for the expression A || B.

| A | B | A || B | | true | true | true | | false | true | true | | true | false | true | | false | false | false |

4. Create a truth table for the expression !A && !B.

//
|  A    |   !A    |    B  |   !B   | !A && !B |
| true  | false   | true  | false  | true     |
| false | true    | false | true   | true     |
| true  | false   | false | true   | false    |
| false | true    | true  | false  | false    |

5. Write a step-by-step evaluation for the following expression (remember order of operations): 2 + 3 * 2 + 1. // 2 + 3 * 2 + 1 2 + 6 + 1 8 + 1 9

6. Write a step-by-step evaluation for the following expression (remember order of operations): 4 / 2 + 8 / 4. // 4 / 2 + 8 / 4 2 + 8 / 4 2 + 2 4

7. Write a step-by-step evaluation for the following expression: 'ca' + 'ter' + 'pi' + 'llar'. // 'ca' + 'ter' + 'pi' + 'llar' 'cater' + 'pi' + 'llar' 'caterpi' + 'llar' 'caterpillar'

8. Write a step-by-step evaluation for the following expression: 2 * 4 === 8 && 'car' + 'pool' === 'carpool'. // 8 === 8 && 'carpool' === 'carpool' true && true true