The sum of 7 times a number and 3 equals 8

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

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

Worth 15 points handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony? a= p = 1/4 b= p+0.25p c=(p + 1/4)p d=5/4p 0.25p choose 2 answers