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In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale

Amayoral candidate would like to know her residents’ views on a tax on sugar drinks before the mayoral debates. she asks one thousand registered voters from both parties. these voters are an example of a census population convenience sample simple random sample

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2