Pls help it isn't hard I'm just having trouble. Olive buys clothes at a store with a total bill of 54.50. She has a 20% off coupon and pays 7.5% sales tax. She calculates the total cost of the clothes, using the expression:
(54.50 ÷ 1.20) (1.075).
Explain the error of olives reasoning.
Determine the correct expression and explain your reasoning.

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²