No I do not know how to do this
Because it is every hour there's 60min so that's and hour the the next 45 min are different
Well, you would divide 4.20/6 to find the price of just 1 muffin. 4.20/6 is 0.7, meaning that the price for one muffin is 70 cents.
The y intercept is (0,-15)
https://www.desmos.com/calculator/xeyrlhyvt1
The probability that both cards are kings is 4/52 times 3/51. This is 12/6256, or 1/221.