Ara buys two items that cost d dollars each. she gives the cashier $20. which expression represents the change she should receive? question 8 options: a 20 - 2d b 20 - d c 20 + 2d d 2d - 20

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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.

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day