The question: The temperature in a town is 30.8°F during the day and -20.1°F at night. Find the difference in the temperatures

my

The difference in temperature is 50.9°F.

is this right?

What signals you that factoring by grouping is the best method to use when factoring a problem?

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).