Apair of shoes costs $30.99 and the state sales tax is 5%. use the formula c = p + rp to find the total cost of the shoes, where c is the total cost, p is the price, and r is the sales tax rate.

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212