The shoe store has twice as many black shoes as it does brown shoes the total number of shoes is 66 how many black shoes are there

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

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

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?