The original price would be $72. Hope this is right, and helps you.
3x + 8 = -22
-8 -8
3x = -30
x = -30/3 = -10
Correct choice is 1).
Let the amount saving by Sienna and Jacob be x
Sienna has $8 and is saving $3 per week
So the equation will be 3x + 8
Jacob has $6 and is saving $4 per week
So the equation will be 4x + 6
Sienna will have same amount as Jacob, so
3x + 8 = 4x + 6
So the model two will represents the equation that Sienna will have same amount as Jacob.
It depends how many T-shirt’s your purchasing at the price I did the math from 1 shirt to 6 shirts costs..hope this helps