Ronnie marks up items at his store by 45%. he buys kazoo's for $1.30. how much will he sell them for when he applies the mark up?

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

Can someone answer this question? : )

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?