Alexis bought x boxes of cereal for$3each, including tax, and paid with a$20bill. which expression represents the total amount of change she should recieve? urgent a.20-3xb.(3-20)xc.3x-20d.(20-3)x

A.20-3x

Step-by-step explanation:

Number of boxes of cereals bought by Alexis = x

Cost of each cereal box = $3

Total amount Alexis spend on cereals box =

= $ 3x

Alexis paid with a $20 bill.

So, Total amount of change received by Alexis =

So, the expression which represents the change received by Alexis is

20-3x.

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Number of boxes of cereals bought by Alexis = x

Cost of each cereal box = $3

Total amount Alexis spend on cereals box =

= $ 3x

Alexis paid with a $20 bill.

So, Total amount of change received by Alexis =

So, the expression which represents the change received by Alexis is

20-3x.

So, Option A is the correct answer.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

answer: just subtact the units and then add the non negative : happy to

step-by-step explanation: