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We know that:

This means that:

Step-by step calculations:

Open the parenthesis:

Combine like terms:

Simplify the LHS:

Add 3 both sides:

Divide 3 both sides:

Same side exterior angles are linear pair and have sum 180°

Step-by-step explanation:

Step one:

given data

let the manufacturing cost of the video game be x

25% of x

=25/100*x

=0.25x

the new price of the video game will be

=0.25x+x

=$1.25x

cost of shipping is given as $1.5

let the total cost of producing a video game be y

The expression for the total cost of one video game is given as