if all the squares are the same size then 10 can be made because squares have 4 sides and 40/4= 10
Multiply $30 by .25 you get, it's $7.50so you subtract $7.50 from $30 and you get $22.50. Then multiply 2 (sweaters) by $22.50 and you get $45,but wait you still have to multiply that sales tax so you multiply .04 by $45 and you get $1.80, later you subtract $1.80 from $45 and you get $43.20(the cost of the two sweaters)
I did part1 only cuz' no I have no time left Sorry for the inconvenience
Y=-3x for two slopes to be parallel they have to have the same slope but different y intercepts
between 30 and 50 is approximately 40
