Can somebody help me with the last 5

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)