You walk 2 miles in 1/2 hour. at what rate how long will it take you to walk 3 miles

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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

Which equation represents the model shown? a)1/3 divide 1/6 = 2 b)2/3 divide 1/6 = 2/18 c)1/3 divide 1/6 = 1/18 d)2/3 divide 1/6 =4