James bought 4 candles for his mom’s birthday. The total was $21 including a $1 sales tax. What is the price for each candle?

Each candle costs $5

Step-by-step explanation:

Step 1:  Make an expression to express this scenario

James bought 4 candles, let us represent the candles with the variable x.

The sales tax was $1 and the total was $21.

So...

We break this into that there are 4x means that there are 4 candles that cost an "x" amount.  We add the one to the left side to make sure that it is included in the shopping cost.  Finally, on the right side we have the total price.

Step 2:  Find the "x" value which will give us the price for each candle

Subtract 1 from both sides

Divide both sides by 4

 Each candle costs $5

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk