U2L7 Warmup Quiz

What does the letter "x" stand for in the expression 2x + 5

• A variable

• an unknown number

• multiplication

• where the treasure is

Which operation is represented by 2x?

• division

• multiplication

• addition

• subtraction

What is the opposite (inverse) operation of addition?

• subtraction

• multiplication

• division

• equals

Select an equivalent expression to 2x = 6

• 4x = 12

• x = 8

• x = 3

• x = 4

Represent 4 more than a number

• 4 + n

• n - 4

• 4n

• 4 < n

Find the value of y in y = 3x when the value of x = 4

• y = 7

• y = 12

• y = 3/4

• y = 1

Twice the temperature plus 60 degrees

• 2x + 60

• 60x + 2

• 120x

• 2(x + 60)

The tax on the same of a car in NC is 6%. At the dealership, a car purchase also involves $120 in miscellaneous charges. If the original car price is $15,000, write an equation that will help you find the vehicle's TOTAL price.

(Use T for total price)

• T = 15,000 + (15,000 * 0.06) + 120

• T = 15,000 + 6% + 120

• T = (15,000 * 1.06) + 120

• 15,000 = T*.06 + 120

Strawberries cost $3.89 per pound. Sally buys (n) pounds of strawberries plus a bar of chocolate (c).

Write an equation to represent her total (t).

• n + c = 3.89

• 3.89t + c = n

• 3.89 - n = t

• 3.89n + c = t

Is 6 a value that makes the equation 56 = 10x - 2 true?

• No, it would be 58

• Yes

• No, it would be 62

• Not enough information