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Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

Which of the following contains a variable?