Mr. Flint took out a mortgage in order to buy a house. He agreed to pay $278.52 per month for 30 years in order to pay off the mortgage. What is the total amount he will pay during the 30 years?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?