Jam brought three shirts for $3900 what is the cost of five shirts​

Why do interests rates on loans to be lower in a weak economy than in a strong one

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?