Translate the sentence into an equation.
twice the difference of a number and 3 equals 7.

2(x - 3) = 7

Step-by-step explanation:

Set up the difference part first.

x - 3

Now deal with the "Twice."

2(x - 3)

Next equals

2(x - 3) =

And finally what it equals

2(x - 3) = 7

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total