Use a mapping diagram to determine whether the relation is a function. {(−1, 5), (3, 4), (2, 5), (−1, −3)}

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?