Define a variable and write an expression to represent the following phrase a number increased by

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

The perimeter of a regular pentagon is represented by the expression 35d-25. daryl correctly wrote expression to represent the one side of the pentagon

Suppose you are analyzing the relationship between time and distance given in a table, and there are 4 values for each quantity. you divide distance 2 minus distance 1 by time 2 minus time 1.you then divide distance 4 minus distance 3 by time 4 minus time 3 and get a different answer. what can you say about the relationship?